161606115106100 has 72 divisors (see below), whose sum is σ = 418208520524928. Its totient is φ = 52998775632000.

The previous prime is 161606115106081. The next prime is 161606115106133. The reversal of 161606115106100 is 1601511606161.

It is a super-2 number, since 2×161606115106100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5018807351 + ... + 5018839550.

Almost surely, 2^{161606115106100} is an apocalyptic number.

161606115106100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161606115106100 is an abundant number, since it is smaller than the sum of its proper divisors (256602405418828).

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

161606115106100 is a wasteful number, since it uses less digits than its factorization.

161606115106100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10037646945 (or 10037646938 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The spelling of 161606115106100 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred fifteen million, one hundred six thousand, one hundred".