977873378723 has 2 divisors, whose sum is σ = 977873378724. Its totient is φ = 977873378722.

The previous prime is 977873378687. The next prime is 977873378789. The reversal of 977873378723 is 327873378779.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 977873378723 - 2¹⁶ = 977873313187 is a prime.

It is a super-2 number, since 2×977873378723² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (977873378623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488936689361 + 488936689362.

It is an arithmetic number, because the mean of its divisors is an integer number (488936689362).

Almost surely, 2^977873378723 is an apocalyptic number.

977873378723 is a deficient number, since it is larger than the sum of its proper divisors (1).

977873378723 is an equidigital number, since it uses as much as digits as its factorization.

977873378723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 522764928, while the sum is 71.

The spelling of 977873378723 in words is "nine hundred seventy-seven billion, eight hundred seventy-three million, three hundred seventy-eight thousand, seven hundred twenty-three".