161227657152650 has 24 divisors (see below), whose sum is σ = 327145573423584. Its totient is φ = 58628238964400.

The previous prime is 161227657152631. The next prime is 161227657152671. The reversal of 161227657152650 is 56251756722161.

It is a super-3 number, since 3×161227657152650³ (a number of 44 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146570596862 + ... + 146570597961.

It is an arithmetic number, because the mean of its divisors is an integer number (13631065559316).

Almost surely, 2^{161227657152650} is an apocalyptic number.

161227657152650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161227657152650 is an abundant number, since it is smaller than the sum of its proper divisors (165917916270934).

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

161227657152650 is a wasteful number, since it uses less digits than its factorization.

161227657152650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293141194846 (or 293141194841 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 56.

The spelling of 161227657152650 in words is "one hundred sixty-one trillion, two hundred twenty-seven billion, six hundred fifty-seven million, one hundred fifty-two thousand, six hundred fifty".