75554476979 has 2 divisors, whose sum is σ = 75554476980. Its totient is φ = 75554476978.

The previous prime is 75554476919. The next prime is 75554476981. The reversal of 75554476979 is 97967445557.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75554476979 - 2²⁰ = 75553428403 is a prime.

It is a Sophie Germain prime.

Together with 75554476981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75554476909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37777238489 + 37777238490.

It is an arithmetic number, because the mean of its divisors is an integer number (37777238490).

Almost surely, 2^75554476979 is an apocalyptic number.

75554476979 is a deficient number, since it is larger than the sum of its proper divisors (1).

75554476979 is an equidigital number, since it uses as much as digits as its factorization.

75554476979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396000, while the sum is 68.

The spelling of 75554476979 in words is "seventy-five billion, five hundred fifty-four million, four hundred seventy-six thousand, nine hundred seventy-nine".