75007878731 has 2 divisors, whose sum is σ = 75007878732. Its totient is φ = 75007878730.

The previous prime is 75007878679. The next prime is 75007878773. The reversal of 75007878731 is 13787870057.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75007878731 - 2²⁶ = 74940769867 is a prime.

It is a super-2 number, since 2×75007878731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75007878031) 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 as a sum of consecutive naturals, namely, 37503939365 + 37503939366.

It is an arithmetic number, because the mean of its divisors is an integer number (37503939366).

Almost surely, 2^75007878731 is an apocalyptic number.

75007878731 is a deficient number, since it is larger than the sum of its proper divisors (1).

75007878731 is an equidigital number, since it uses as much as digits as its factorization.

75007878731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304960, while the sum is 53.

The spelling of 75007878731 in words is "seventy-five billion, seven million, eight hundred seventy-eight thousand, seven hundred thirty-one".