161254860480 has 672 divisors, whose sum is σ = 696611865600. Its totient is φ = 34916603904.

The previous prime is 161254860479. The next prime is 161254860509. The reversal of 161254860480 is 84068452161.

It is a happy number.

161254860480 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 548 + 60 + 48 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8033817 + ... + 8053863.

It is an arithmetic number, because the mean of its divisors is an integer number (1036624800).

Almost surely, 2^161254860480 is an apocalyptic number.

161254860480 is a gapful number since it is divisible by the number (10) 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 161254860480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348305932800).

161254860480 is an abundant number, since it is smaller than the sum of its proper divisors (535357005120).

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

161254860480 is a wasteful number, since it uses less digits than its factorization.

161254860480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20106 (or 20083 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 161254860480 in words is "one hundred sixty-one billion, two hundred fifty-four million, eight hundred sixty thousand, four hundred eighty".