161003551760 has 40 divisors (see below), whose sum is σ = 386408530176. Its totient is φ = 62323954560.

The previous prime is 161003551747. The next prime is 161003551763. The reversal of 161003551760 is 67155300161.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 161003551760.

It is not an unprimeable number, because it can be changed into a prime (161003551763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32457914 + ... + 32462873.

Almost surely, 2^161003551760 is an apocalyptic number.

161003551760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161003551760 is an abundant number, since it is smaller than the sum of its proper divisors (225404978416).

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

161003551760 is a wasteful number, since it uses less digits than its factorization.

161003551760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64920831 (or 64920825 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 161003551760 in words is "one hundred sixty-one billion, three million, five hundred fifty-one thousand, seven hundred sixty".