123717672015 has 64 divisors (see below), whose sum is σ = 229058620416. Its totient is φ = 55852296192.

The previous prime is 123717671983. The next prime is 123717672061. The reversal of 123717672015 is 510276717321.

It is not a de Polignac number, because 123717672015 - 2⁵ = 123717671983 is a prime.

It is a super-2 number, since 2×123717672015² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3267784 + ... + 3305426.

It is an arithmetic number, because the mean of its divisors is an integer number (3579040944).

Almost surely, 2^123717672015 is an apocalyptic number.

123717672015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123717672015 is a deficient number, since it is larger than the sum of its proper divisors (105340948401).

123717672015 is a wasteful number, since it uses less digits than its factorization.

123717672015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38048.

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 123717672015 in words is "one hundred twenty-three billion, seven hundred seventeen million, six hundred seventy-two thousand, fifteen".