977972933461 has 2 divisors, whose sum is σ = 977972933462. Its totient is φ = 977972933460.

The previous prime is 977972933453. The next prime is 977972933467. The reversal of 977972933461 is 164339279779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 763515954436 + 214456979025 = 873794^2 + 463095^2 .

It is a cyclic number.

It is not a de Polignac number, because 977972933461 - 2³ = 977972933453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977972933467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488986466730 + 488986466731.

It is an arithmetic number, because the mean of its divisors is an integer number (488986466731).

Almost surely, 2^977972933461 is an apocalyptic number.

It is an amenable number.

977972933461 is a deficient number, since it is larger than the sum of its proper divisors (1).

977972933461 is an equidigital number, since it uses as much as digits as its factorization.

977972933461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108020304, while the sum is 67.

The spelling of 977972933461 in words is "nine hundred seventy-seven billion, nine hundred seventy-two million, nine hundred thirty-three thousand, four hundred sixty-one".