977507581111 has 2 divisors, whose sum is σ = 977507581112. Its totient is φ = 977507581110.

The previous prime is 977507581093. The next prime is 977507581123. The reversal of 977507581111 is 111185705779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 977507581111 - 2¹³ = 977507572919 is a prime.

It is a super-2 number, since 2×977507581111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977507584111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488753790555 + 488753790556.

It is an arithmetic number, because the mean of its divisors is an integer number (488753790556).

Almost surely, 2^977507581111 is an apocalyptic number.

977507581111 is a deficient number, since it is larger than the sum of its proper divisors (1).

977507581111 is an equidigital number, since it uses as much as digits as its factorization.

977507581111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 617400, while the sum is 52.

The spelling of 977507581111 in words is "nine hundred seventy-seven billion, five hundred seven million, five hundred eighty-one thousand, one hundred eleven".