72618931519 has 2 divisors, whose sum is σ = 72618931520. Its totient is φ = 72618931518.

The previous prime is 72618931439. The next prime is 72618931529. The reversal of 72618931519 is 91513981627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72618931519 - 2²⁹ = 72082060607 is a prime.

It is a super-2 number, since 2×72618931519² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72618931529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36309465759 + 36309465760.

It is an arithmetic number, because the mean of its divisors is an integer number (36309465760).

Almost surely, 2^72618931519 is an apocalyptic number.

72618931519 is a deficient number, since it is larger than the sum of its proper divisors (1).

72618931519 is an equidigital number, since it uses as much as digits as its factorization.

72618931519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 52.

The spelling of 72618931519 in words is "seventy-two billion, six hundred eighteen million, nine hundred thirty-one thousand, five hundred nineteen".