75066139979 has 2 divisors, whose sum is σ = 75066139980. Its totient is φ = 75066139978.

The previous prime is 75066139943. The next prime is 75066140021. The reversal of 75066139979 is 97993166057.

It is a weak prime.

It is an emirp because it is prime and its reverse (97993166057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75066139979 - 2²⁸ = 74797704523 is a prime.

It is not a weakly prime, because it can be changed into another prime (75066139079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37533069989 + 37533069990.

It is an arithmetic number, because the mean of its divisors is an integer number (37533069990).

Almost surely, 2^75066139979 is an apocalyptic number.

75066139979 is a deficient number, since it is larger than the sum of its proper divisors (1).

75066139979 is an equidigital number, since it uses as much as digits as its factorization.

75066139979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19289340, while the sum is 62.

The spelling of 75066139979 in words is "seventy-five billion, sixty-six million, one hundred thirty-nine thousand, nine hundred seventy-nine".