72785023079 has 2 divisors, whose sum is σ = 72785023080. Its totient is φ = 72785023078.

The previous prime is 72785023063. The next prime is 72785023177. The reversal of 72785023079 is 97032058727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72785023079 - 2⁴ = 72785023063 is a prime.

It is a super-2 number, since 2×72785023079² (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 (72785023379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36392511539 + 36392511540.

It is an arithmetic number, because the mean of its divisors is an integer number (36392511540).

Almost surely, 2^72785023079 is an apocalyptic number.

72785023079 is a deficient number, since it is larger than the sum of its proper divisors (1).

72785023079 is an equidigital number, since it uses as much as digits as its factorization.

72785023079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 72785023079 in words is "seventy-two billion, seven hundred eighty-five million, twenty-three thousand, seventy-nine".