161620932268 has 12 divisors (see below), whose sum is σ = 282840038320. Its totient is φ = 80809492752.

The previous prime is 161620932257. The next prime is 161620932269. The reversal of 161620932268 is 862239026161.

It is a super-2 number, since 2×161620932268² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161620932269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234505 + ... + 615007.

Almost surely, 2^161620932268 is an apocalyptic number.

It is an amenable number.

161620932268 is a deficient number, since it is larger than the sum of its proper divisors (121219106052).

161620932268 is a wasteful number, since it uses less digits than its factorization.

161620932268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486696 (or 486694 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 161620932268 in words is "one hundred sixty-one billion, six hundred twenty million, nine hundred thirty-two thousand, two hundred sixty-eight".