75421472939 has 2 divisors, whose sum is σ = 75421472940. Its totient is φ = 75421472938.

The previous prime is 75421472899. The next prime is 75421472947. The reversal of 75421472939 is 93927412457.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75421472939 - 2²⁸ = 75153037483 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (75421472039) 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, 37710736469 + 37710736470.

It is an arithmetic number, because the mean of its divisors is an integer number (37710736470).

Almost surely, 2^75421472939 is an apocalyptic number.

75421472939 is a deficient number, since it is larger than the sum of its proper divisors (1).

75421472939 is an equidigital number, since it uses as much as digits as its factorization.

75421472939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The spelling of 75421472939 in words is "seventy-five billion, four hundred twenty-one million, four hundred seventy-two thousand, nine hundred thirty-nine".