161011050660 has 72 divisors (see below), whose sum is σ = 504155049216. Its totient is φ = 41551237440.

The previous prime is 161011050647. The next prime is 161011050661. The reversal of 161011050660 is 66050110161.

It is not an unprimeable number, because it can be changed into a prime (161011050661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14421934 + ... + 14433093.

Almost surely, 2^161011050660 is an apocalyptic number.

161011050660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161011050660 is an abundant number, since it is smaller than the sum of its proper divisors (343143998556).

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

161011050660 is a wasteful number, since it uses less digits than its factorization.

161011050660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28855073 (or 28855068 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 161011050660 in words is "one hundred sixty-one billion, eleven million, fifty thousand, six hundred sixty".