161083065616 has 80 divisors (see below), whose sum is σ = 370242195840. Its totient is φ = 67049994240.

The previous prime is 161083065607. The next prime is 161083065623. The reversal of 161083065616 is 616560380161.

It is a super-2 number, since 2×161083065616² (a number of 23 digits) contains 22 as substring.

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, 616836 + ... + 838243.

It is an arithmetic number, because the mean of its divisors is an integer number (4628027448).

Almost surely, 2^161083065616 is an apocalyptic number.

161083065616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161083065616 is an abundant number, since it is smaller than the sum of its proper divisors (209159130224).

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

161083065616 is a wasteful number, since it uses less digits than its factorization.

161083065616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455152 (or 1455146 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 161083065616 in words is "one hundred sixty-one billion, eighty-three million, sixty-five thousand, six hundred sixteen".