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BaseRepresentation
bin1001011000101001011…
…0101110111011101100
3120102011202002220120221
42112022112232323230
510120202130131124
6202023105421124
714435360634232
oct2261226567354
9512152086527
10161235005164
1162419a58892
12272b933a7a4
13122870992cc
147b37956952
1542da0dece4
hex258a5aeeec

161235005164 has 12 divisors (see below), whose sum is σ = 282381191064. Its totient is φ = 80554664864.

The previous prime is 161235005137. The next prime is 161235005171. The reversal of 161235005164 is 461500532161.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15703657 + ... + 15713920.

It is an arithmetic number, because the mean of its divisors is an integer number (23531765922).

Almost surely, 2161235005164 is an apocalyptic number.

It is an amenable number.

161235005164 is a deficient number, since it is larger than the sum of its proper divisors (121146185900).

161235005164 is a wasteful number, since it uses less digits than its factorization.

161235005164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31418864 (or 31418862 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 161235005164 in words is "one hundred sixty-one billion, two hundred thirty-five million, five thousand, one hundred sixty-four".