75012421079 has 2 divisors, whose sum is σ = 75012421080. Its totient is φ = 75012421078.

The previous prime is 75012421039. The next prime is 75012421091. The reversal of 75012421079 is 97012421057.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75012421079 - 2²⁸ = 74743985623 is a prime.

It is a super-2 number, since 2×75012421079² (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 (75012421009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37506210539 + 37506210540.

It is an arithmetic number, because the mean of its divisors is an integer number (37506210540).

Almost surely, 2^75012421079 is an apocalyptic number.

75012421079 is a deficient number, since it is larger than the sum of its proper divisors (1).

75012421079 is an equidigital number, since it uses as much as digits as its factorization.

75012421079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 75012421079 in words is "seventy-five billion, twelve million, four hundred twenty-one thousand, seventy-nine".