72101015999 has 8 divisors (see below), whose sum is σ = 75271548000. Its totient is φ = 68976103392.

The previous prime is 72101015953. The next prime is 72101016017. The reversal of 72101015999 is 99951010127.

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

It is not a de Polignac number, because 72101015999 - 2²⁸ = 71832580543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72101315999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11401619 + ... + 11407940.

It is an arithmetic number, because the mean of its divisors is an integer number (9408943500).

Almost surely, 2^72101015999 is an apocalyptic number.

72101015999 is a deficient number, since it is larger than the sum of its proper divisors (3170532001).

72101015999 is a wasteful number, since it uses less digits than its factorization.

72101015999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22809697.

The product of its (nonzero) digits is 51030, while the sum is 44.

The spelling of 72101015999 in words is "seventy-two billion, one hundred one million, fifteen thousand, nine hundred ninety-nine".