78575623339 has 2 divisors, whose sum is σ = 78575623340. Its totient is φ = 78575623338.

The previous prime is 78575623303. The next prime is 78575623349. The reversal of 78575623339 is 93332657587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78575623339 - 2²⁵ = 78542068907 is a prime.

It is a super-2 number, since 2×78575623339² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78575623349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39287811669 + 39287811670.

It is an arithmetic number, because the mean of its divisors is an integer number (39287811670).

Almost surely, 2^78575623339 is an apocalyptic number.

78575623339 is a deficient number, since it is larger than the sum of its proper divisors (1).

78575623339 is an equidigital number, since it uses as much as digits as its factorization.

78575623339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 58.

The spelling of 78575623339 in words is "seventy-eight billion, five hundred seventy-five million, six hundred twenty-three thousand, three hundred thirty-nine".