977873378623 has 2 divisors, whose sum is σ = 977873378624. Its totient is φ = 977873378622.

The previous prime is 977873378567. The next prime is 977873378627. The reversal of 977873378623 is 326873378779.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-977873378623 is a prime.

It is a super-2 number, since 2×977873378623² (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 (977873378627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488936689311 + 488936689312.

It is an arithmetic number, because the mean of its divisors is an integer number (488936689312).

Almost surely, 2^977873378623 is an apocalyptic number.

977873378623 is a deficient number, since it is larger than the sum of its proper divisors (1).

977873378623 is an equidigital number, since it uses as much as digits as its factorization.

977873378623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448084224, while the sum is 70.

The spelling of 977873378623 in words is "nine hundred seventy-seven billion, eight hundred seventy-three million, three hundred seventy-eight thousand, six hundred twenty-three".