10977887648461 has 2 divisors, whose sum is σ = 10977887648462. Its totient is φ = 10977887648460.

The previous prime is 10977887648407. The next prime is 10977887648477. The reversal of 10977887648461 is 16484678877901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6970260015625 + 4007627632836 = 2640125^2 + 2001906^2 .

It is a cyclic number.

It is not a de Polignac number, because 10977887648461 - 2¹⁹ = 10977887124173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10977887688461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5488943824230 + 5488943824231.

It is an arithmetic number, because the mean of its divisors is an integer number (5488943824231).

Almost surely, 2^{10977887648461} is an apocalyptic number.

It is an amenable number.

10977887648461 is a deficient number, since it is larger than the sum of its proper divisors (1).

10977887648461 is an equidigital number, since it uses as much as digits as its factorization.

10977887648461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 910393344, while the sum is 76.

The spelling of 10977887648461 in words is "ten trillion, nine hundred seventy-seven billion, eight hundred eighty-seven million, six hundred forty-eight thousand, four hundred sixty-one".