72615636422031 has 8 divisors (see below), whose sum is σ = 99437628253744. Its totient is φ = 47102034435840.

The previous prime is 72615636422027. The next prime is 72615636422033. The reversal of 72615636422031 is 13022463651627.

It is a happy number.

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

It is not a de Polignac number, because 72615636422031 - 2² = 72615636422027 is a prime.

It is a super-2 number, since 2×72615636422031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72615636422033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327097461250 + ... + 327097461471.

It is an arithmetic number, because the mean of its divisors is an integer number (12429703531718).

Almost surely, 2^{72615636422031} is an apocalyptic number.

72615636422031 is a deficient number, since it is larger than the sum of its proper divisors (26821991831713).

72615636422031 is a wasteful number, since it uses less digits than its factorization.

72615636422031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654194922761.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 72615636422031 in words is "seventy-two trillion, six hundred fifteen billion, six hundred thirty-six million, four hundred twenty-two thousand, thirty-one".