76776481279073 has 2 divisors, whose sum is σ = 76776481279074. Its totient is φ = 76776481279072.

The previous prime is 76776481279019. The next prime is 76776481279087. The reversal of 76776481279073 is 37097218467767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44922004902544 + 31854476376529 = 6702388^2 + 5643977^2 .

It is a cyclic number.

It is not a de Polignac number, because 76776481279073 - 2²⁰ = 76776480230497 is a prime.

It is not a weakly prime, because it can be changed into another prime (76776481279093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38388240639536 + 38388240639537.

It is an arithmetic number, because the mean of its divisors is an integer number (38388240639537).

Almost surely, 2^{76776481279073} is an apocalyptic number.

It is an amenable number.

76776481279073 is a deficient number, since it is larger than the sum of its proper divisors (1).

76776481279073 is an equidigital number, since it uses as much as digits as its factorization.

76776481279073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1045529856, while the sum is 74.

The spelling of 76776481279073 in words is "seventy-six trillion, seven hundred seventy-six billion, four hundred eighty-one million, two hundred seventy-nine thousand, seventy-three".