977974782751 has 2 divisors, whose sum is σ = 977974782752. Its totient is φ = 977974782750.

The previous prime is 977974782737. The next prime is 977974782761. The reversal of 977974782751 is 157287479779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 977974782751 - 2¹¹ = 977974780703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977974782761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488987391375 + 488987391376.

It is an arithmetic number, because the mean of its divisors is an integer number (488987391376).

Almost surely, 2^977974782751 is an apocalyptic number.

977974782751 is a deficient number, since it is larger than the sum of its proper divisors (1).

977974782751 is an equidigital number, since it uses as much as digits as its factorization.

977974782751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435637440, while the sum is 73.

The spelling of 977974782751 in words is "nine hundred seventy-seven billion, nine hundred seventy-four million, seven hundred eighty-two thousand, seven hundred fifty-one".