75775625479 has 2 divisors, whose sum is σ = 75775625480. Its totient is φ = 75775625478.

The previous prime is 75775625477. The next prime is 75775625521. The reversal of 75775625479 is 97452657757.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75775625479 - 2¹ = 75775625477 is a prime.

Together with 75775625477, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 75775625479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75775625477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37887812739 + 37887812740.

It is an arithmetic number, because the mean of its divisors is an integer number (37887812740).

Almost surely, 2^75775625479 is an apocalyptic number.

75775625479 is a deficient number, since it is larger than the sum of its proper divisors (1).

75775625479 is an equidigital number, since it uses as much as digits as its factorization.

75775625479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129654000, while the sum is 64.

The spelling of 75775625479 in words is "seventy-five billion, seven hundred seventy-five million, six hundred twenty-five thousand, four hundred seventy-nine".