138455902015 has 8 divisors (see below), whose sum is σ = 167792103648. Its totient is φ = 109668040800.

The previous prime is 138455901973. The next prime is 138455902033. The reversal of 138455902015 is 510209554831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-138455902015 is a prime.

It is a super-3 number, since 3×138455902015³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137084547 + ... + 137085556.

It is an arithmetic number, because the mean of its divisors is an integer number (20974012956).

Almost surely, 2^138455902015 is an apocalyptic number.

138455902015 is a deficient number, since it is larger than the sum of its proper divisors (29336201633).

138455902015 is a wasteful number, since it uses less digits than its factorization.

138455902015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274170209.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 138455902015 in words is "one hundred thirty-eight billion, four hundred fifty-five million, nine hundred two thousand, fifteen".