76038620981 has 2 divisors, whose sum is σ = 76038620982. Its totient is φ = 76038620980.

The previous prime is 76038620947. The next prime is 76038621007. The reversal of 76038620981 is 18902683067.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64698500881 + 11340120100 = 254359^2 + 106490^2 .

It is an emirp because it is prime and its reverse (18902683067) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76038620981 - 2³⁴ = 58858751797 is a prime.

It is a super-2 number, since 2×76038620981² (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 (76038620081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38019310490 + 38019310491.

It is an arithmetic number, because the mean of its divisors is an integer number (38019310491).

Almost surely, 2^76038620981 is an apocalyptic number.

It is an amenable number.

76038620981 is a deficient number, since it is larger than the sum of its proper divisors (1).

76038620981 is an equidigital number, since it uses as much as digits as its factorization.

76038620981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 76038620981 in words is "seventy-six billion, thirty-eight million, six hundred twenty thousand, nine hundred eighty-one".