161485107264 has 84 divisors (see below), whose sum is σ = 498473149356. Its totient is φ = 49687723008.

The previous prime is 161485107263. The next prime is 161485107281. The reversal of 161485107264 is 462701584161.

161485107264 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 8 + 510 + 72 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 107479065600 + 54006041664 = 327840^2 + 232392^2 .

It is a super-3 number, since 3×161485107264³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (161485107263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10775439 + ... + 10790414.

It is an arithmetic number, because the mean of its divisors is an integer number (5934204159).

Almost surely, 2^161485107264 is an apocalyptic number.

It is an amenable number.

161485107264 is an abundant number, since it is smaller than the sum of its proper divisors (336988042092).

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

161485107264 is a wasteful number, since it uses less digits than its factorization.

161485107264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21565884 (or 21565871 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 161485107264 in words is "one hundred sixty-one billion, four hundred eighty-five million, one hundred seven thousand, two hundred sixty-four".