161050516572 has 48 divisors (see below), whose sum is σ = 410696399232. Its totient is φ = 48713945280.

The previous prime is 161050516567. The next prime is 161050516609. The reversal of 161050516572 is 275615050161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161050516572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1043043 + ... + 1187450.

It is an arithmetic number, because the mean of its divisors is an integer number (8556174984).

Almost surely, 2^161050516572 is an apocalyptic number.

161050516572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161050516572 is an abundant number, since it is smaller than the sum of its proper divisors (249645882660).

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

161050516572 is a wasteful number, since it uses less digits than its factorization.

161050516572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231058 (or 2231056 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 161050516572 in words is "one hundred sixty-one billion, fifty million, five hundred sixteen thousand, five hundred seventy-two".