677517631157 has 4 divisors (see below), whose sum is σ = 677690339040. Its totient is φ = 677344923276.

The previous prime is 677517631139. The next prime is 677517631207. The reversal of 677517631157 is 751136715776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 677517631157 - 2²⁰ = 677516582581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677517631657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86348057 + ... + 86355902.

It is an arithmetic number, because the mean of its divisors is an integer number (169422584760).

Almost surely, 2^677517631157 is an apocalyptic number.

It is an amenable number.

677517631157 is a deficient number, since it is larger than the sum of its proper divisors (172707883).

677517631157 is a wasteful number, since it uses less digits than its factorization.

677517631157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172707882.

The product of its digits is 6482700, while the sum is 56.

The spelling of 677517631157 in words is "six hundred seventy-seven billion, five hundred seventeen million, six hundred thirty-one thousand, one hundred fifty-seven".