76973388337981 has 2 divisors, whose sum is σ = 76973388337982. Its totient is φ = 76973388337980.

The previous prime is 76973388337849. The next prime is 76973388337999. The reversal of 76973388337981 is 18973388337967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71298349507225 + 5675038830756 = 8443835^2 + 2382234^2 .

It is a cyclic number.

It is not a de Polignac number, because 76973388337981 - 2¹¹ = 76973388335933 is a prime.

It is a super-2 number, since 2×76973388337981² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76973388337895 and 76973388337904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76973388317981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38486694168990 + 38486694168991.

It is an arithmetic number, because the mean of its divisors is an integer number (38486694168991).

Almost surely, 2^{76973388337981} is an apocalyptic number.

It is an amenable number.

76973388337981 is a deficient number, since it is larger than the sum of its proper divisors (1).

76973388337981 is an equidigital number, since it uses as much as digits as its factorization.

76973388337981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6913299456, while the sum is 82.

The spelling of 76973388337981 in words is "seventy-six trillion, nine hundred seventy-three billion, three hundred eighty-eight million, three hundred thirty-seven thousand, nine hundred eighty-one".