257415712072 has 8 divisors (see below), whose sum is σ = 482654460150. Its totient is φ = 128707856032.

The previous prime is 257415712009. The next prime is 257415712097. The reversal of 257415712072 is 270217514752.

It can be written as a sum of positive squares in only one way, i.e., 236987870596 + 20427841476 = 486814^2 + 142926^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16088481997 + ... + 16088482012.

Almost surely, 2^257415712072 is an apocalyptic number.

It is an amenable number.

257415712072 is a deficient number, since it is larger than the sum of its proper divisors (225238748078).

257415712072 is a wasteful number, since it uses less digits than its factorization.

257415712072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32176964015 (or 32176964011 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 43.

The spelling of 257415712072 in words is "two hundred fifty-seven billion, four hundred fifteen million, seven hundred twelve thousand, seventy-two".