72102017007139 has 16 divisors (see below), whose sum is σ = 89105871909888. Its totient is φ = 56928751489152.

The previous prime is 72102017007089. The next prime is 72102017007197. The reversal of 72102017007139 is 93170071020127.

It is a cyclic number.

It is not a de Polignac number, because 72102017007139 - 2²¹ = 72102014909987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72102017007199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6445731669 + ... + 6445742854.

It is an arithmetic number, because the mean of its divisors is an integer number (5569116994368).

Almost surely, 2^{72102017007139} is an apocalyptic number.

72102017007139 is a deficient number, since it is larger than the sum of its proper divisors (17003854902749).

72102017007139 is a wasteful number, since it uses less digits than its factorization.

72102017007139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891474594.

The product of its (nonzero) digits is 37044, while the sum is 40.

The spelling of 72102017007139 in words is "seventy-two trillion, one hundred two billion, seventeen million, seven thousand, one hundred thirty-nine".