161550600105615 has 32 divisors (see below), whose sum is σ = 299453480288256. Its totient is φ = 72840035738880.

The previous prime is 161550600105571. The next prime is 161550600105701. The reversal of 161550600105615 is 516501006055161.

It is not a de Polignac number, because 161550600105615 - 2⁶ = 161550600105551 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10538191951 + ... + 10538207280.

It is an arithmetic number, because the mean of its divisors is an integer number (9357921259008).

Almost surely, 2^{161550600105615} is an apocalyptic number.

161550600105615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161550600105615 is a deficient number, since it is larger than the sum of its proper divisors (137902880182641).

161550600105615 is a wasteful number, since it uses less digits than its factorization.

161550600105615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21076399319.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 161550600105615 in words is "one hundred sixty-one trillion, five hundred fifty billion, six hundred million, one hundred five thousand, six hundred fifteen".