161100616650 has 24 divisors (see below), whose sum is σ = 399529529664. Its totient is φ = 42960164400.

The previous prime is 161100616613. The next prime is 161100616661. The reversal of 161100616650 is 56616001161.

It is a super-3 number, since 3×161100616650³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 537001906 + ... + 537002205.

It is an arithmetic number, because the mean of its divisors is an integer number (16647063736).

Almost surely, 2^161100616650 is an apocalyptic number.

161100616650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161100616650 is an abundant number, since it is smaller than the sum of its proper divisors (238428913014).

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

161100616650 is a wasteful number, since it uses less digits than its factorization.

161100616650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074004126 (or 1074004121 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 161100616650 in words is "one hundred sixty-one billion, one hundred million, six hundred sixteen thousand, six hundred fifty".