677971590251 has 2 divisors, whose sum is σ = 677971590252. Its totient is φ = 677971590250.

The previous prime is 677971590239. The next prime is 677971590293. The reversal of 677971590251 is 152095179776.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677971590251 is a prime.

It is not a weakly prime, because it can be changed into another prime (677971590211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338985795125 + 338985795126.

It is an arithmetic number, because the mean of its divisors is an integer number (338985795126).

Almost surely, 2^677971590251 is an apocalyptic number.

677971590251 is a deficient number, since it is larger than the sum of its proper divisors (1).

677971590251 is an equidigital number, since it uses as much as digits as its factorization.

677971590251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8334900, while the sum is 59.

The spelling of 677971590251 in words is "six hundred seventy-seven billion, nine hundred seventy-one million, five hundred ninety thousand, two hundred fifty-one".