257037240560761 has 4 divisors (see below), whose sum is σ = 257037497677300. Its totient is φ = 257036983444224.

The previous prime is 257037240560717. The next prime is 257037240560773. The reversal of 257037240560761 is 167065042730752.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87162016323600 + 169875224237161 = 9336060^2 + 13033619^2 .

It is a cyclic number.

It is not a de Polignac number, because 257037240560761 - 2¹⁷ = 257037240429689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257037240567761) 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, 127052856 + ... + 129060073.

It is an arithmetic number, because the mean of its divisors is an integer number (64259374419325).

Almost surely, 2^{257037240560761} is an apocalyptic number.

It is an amenable number.

257037240560761 is a deficient number, since it is larger than the sum of its proper divisors (257116539).

257037240560761 is a wasteful number, since it uses less digits than its factorization.

257037240560761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257116538.

The product of its (nonzero) digits is 14817600, while the sum is 55.

The spelling of 257037240560761 in words is "two hundred fifty-seven trillion, thirty-seven billion, two hundred forty million, five hundred sixty thousand, seven hundred sixty-one".