123616133433551 has 16 divisors (see below), whose sum is σ = 137198766152448. Its totient is φ = 110434612478400.

The previous prime is 123616133433547. The next prime is 123616133433571. The reversal of 123616133433551 is 155334331616321.

It is a cyclic number.

It is not a de Polignac number, because 123616133433551 - 2² = 123616133433547 is a prime.

It is a super-2 number, since 2×123616133433551² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123616133433496 and 123616133433505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123616133433511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257544110 + ... + 258023643.

It is an arithmetic number, because the mean of its divisors is an integer number (8574922884528).

Almost surely, 2^{123616133433551} is an apocalyptic number.

123616133433551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123616133433551 is a deficient number, since it is larger than the sum of its proper divisors (13582632718897).

123616133433551 is a wasteful number, since it uses less digits than its factorization.

123616133433551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515568142.

The product of its digits is 1749600, while the sum is 47.

The spelling of 123616133433551 in words is "one hundred twenty-three trillion, six hundred sixteen billion, one hundred thirty-three million, four hundred thirty-three thousand, five hundred fifty-one".