257072360767 has 4 divisors (see below), whose sum is σ = 257076300976. Its totient is φ = 257068420560.

The previous prime is 257072360681. The next prime is 257072360849. The reversal of 257072360767 is 767063270752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257072360767 - 2²⁷ = 256938143039 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 (257072390767) 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, 1870563 + ... + 2003284.

It is an arithmetic number, because the mean of its divisors is an integer number (64269075244).

Almost surely, 2^257072360767 is an apocalyptic number.

257072360767 is a deficient number, since it is larger than the sum of its proper divisors (3940209).

257072360767 is an equidigital number, since it uses as much as digits as its factorization.

257072360767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940208.

The product of its (nonzero) digits is 5186160, while the sum is 52.

The spelling of 257072360767 in words is "two hundred fifty-seven billion, seventy-two million, three hundred sixty thousand, seven hundred sixty-seven".