257000511977 has 4 divisors (see below), whose sum is σ = 280364194896. Its totient is φ = 233636829060.

The previous prime is 257000511917. The next prime is 257000512001. The reversal of 257000511977 is 779115000752.

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 257000511977 - 2⁸ = 257000511721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257000511917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11681841443 + ... + 11681841464.

It is an arithmetic number, because the mean of its divisors is an integer number (70091048724).

Almost surely, 2^257000511977 is an apocalyptic number.

It is an amenable number.

257000511977 is a deficient number, since it is larger than the sum of its proper divisors (23363682919).

257000511977 is a wasteful number, since it uses less digits than its factorization.

257000511977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23363682918.

The product of its (nonzero) digits is 154350, while the sum is 44.

The spelling of 257000511977 in words is "two hundred fifty-seven billion, five hundred eleven thousand, nine hundred seventy-seven".