161636663350 has 24 divisors (see below), whose sum is σ = 303304772520. Its totient is φ = 64082497920.

The previous prime is 161636663347. The next prime is 161636663359. The reversal of 161636663350 is 53366636161.

It is a super-2 number, since 2×161636663350² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161636663350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161636663359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14298480 + ... + 14309779.

It is an arithmetic number, because the mean of its divisors is an integer number (12637698855).

Almost surely, 2^161636663350 is an apocalyptic number.

161636663350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161636663350 is a deficient number, since it is larger than the sum of its proper divisors (141668109170).

161636663350 is a wasteful number, since it uses less digits than its factorization.

161636663350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28608384 (or 28608379 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 46.

The spelling of 161636663350 in words is "one hundred sixty-one billion, six hundred thirty-six million, six hundred sixty-three thousand, three hundred fifty".