76772055401 has 2 divisors, whose sum is σ = 76772055402. Its totient is φ = 76772055400.

The previous prime is 76772055359. The next prime is 76772055463. The reversal of 76772055401 is 10455027767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42092677225 + 34679378176 = 205165^2 + 186224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76772055401 is a prime.

It is not a weakly prime, because it can be changed into another prime (76772055001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38386027700 + 38386027701.

It is an arithmetic number, because the mean of its divisors is an integer number (38386027701).

Almost surely, 2^76772055401 is an apocalyptic number.

It is an amenable number.

76772055401 is a deficient number, since it is larger than the sum of its proper divisors (1).

76772055401 is an equidigital number, since it uses as much as digits as its factorization.

76772055401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 76772055401 in words is "seventy-six billion, seven hundred seventy-two million, fifty-five thousand, four hundred one".