261351153162 has 48 divisors (see below), whose sum is σ = 618154655040. Its totient is φ = 79144041600.

The previous prime is 261351153143. The next prime is 261351153221.

261351153162 is a `hidden beast` number, since 2 + 6 + 13 + 51 + 1 + 531 + 62 = 666.

261351153162 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148414 + ... + 738057.

It is an arithmetic number, because the mean of its divisors is an integer number (12878221980).

Almost surely, 2^261351153162 is an apocalyptic number.

261351153162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261351153162 is an abundant number, since it is smaller than the sum of its proper divisors (356803501878).

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

261351153162 is a wasteful number, since it uses less digits than its factorization.

261351153162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887979 (or 887976 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The spelling of 261351153162 in words is "two hundred sixty-one billion, three hundred fifty-one million, one hundred fifty-three thousand, one hundred sixty-two".