161768760960 has 64 divisors (see below), whose sum is σ = 515637931680. Its totient is φ = 43138335744.

The previous prime is 161768760949. The next prime is 161768760991. The reversal of 161768760960 is 69067867161.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 161768760960.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42125362 + ... + 42129201.

Almost surely, 2^161768760960 is an apocalyptic number.

161768760960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161768760960 is an abundant number, since it is smaller than the sum of its proper divisors (353869170720).

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

161768760960 is an equidigital number, since it uses as much as digits as its factorization.

161768760960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84254585 (or 84254573 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 161768760960 in words is "one hundred sixty-one billion, seven hundred sixty-eight million, seven hundred sixty thousand, nine hundred sixty".