161802698700 has 72 divisors (see below), whose sum is σ = 468241711168. Its totient is φ = 43138854720.

The previous prime is 161802698699. The next prime is 161802698711. The reversal of 161802698700 is 7896208161.

It is a super-2 number, since 2×161802698700² (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 161802698700.

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, 1546239 + ... + 1647561.

Almost surely, 2^161802698700 is an apocalyptic number.

161802698700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161802698700 is an abundant number, since it is smaller than the sum of its proper divisors (306439012468).

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

161802698700 is a wasteful number, since it uses less digits than its factorization.

161802698700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106663 (or 106656 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 161802698700 in words is "one hundred sixty-one billion, eight hundred two million, six hundred ninety-eight thousand, seven hundred".