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161194880952 = 2333726124093
BaseRepresentation
bin1001011000011111110…
…1101010111110111000
3120102001221121101112000
42112013331222332320
510120111342142302
6202015113421000
714434362611100
oct2260775527670
9512057541460
10161194880952
11623a9342986
12272a7a0a760
131227b98b081
147b324b0200
1542d681631c
hex2587f6afb8

161194880952 has 288 divisors, whose sum is σ = 529675988400. Its totient is φ = 45289601280.

The previous prime is 161194880921. The next prime is 161194880953. The reversal of 161194880952 is 259088491161.

161194880952 is a `hidden beast` number, since 1 + 61 + 19 + 488 + 0 + 95 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161194880953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 39381018 + ... + 39385110.

Almost surely, 2161194880952 is an apocalyptic number.

161194880952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161194880952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264837994200).

161194880952 is an abundant number, since it is smaller than the sum of its proper divisors (368481107448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161194880952 is a wasteful number, since it uses less digits than its factorization.

161194880952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244 (or 4166 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 161194880952 in words is "one hundred sixty-one billion, one hundred ninety-four million, eight hundred eighty thousand, nine hundred fifty-two".