257010947464 has 8 divisors (see below), whose sum is σ = 481895526510. Its totient is φ = 128505473728.

The previous prime is 257010947461. The next prime is 257010947467. The reversal of 257010947464 is 464749010752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (257010947461) and next prime (257010947467).

It can be written as a sum of positive squares in only one way, i.e., 227855384964 + 29155562500 = 477342^2 + 170750^2 .

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

It is not an unprimeable number, because it can be changed into a prime (257010947461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16063184209 + ... + 16063184224.

Almost surely, 2^257010947464 is an apocalyptic number.

It is an amenable number.

257010947464 is a deficient number, since it is larger than the sum of its proper divisors (224884579046).

257010947464 is a wasteful number, since it uses less digits than its factorization.

257010947464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32126368439 (or 32126368435 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 257010947464 in words is "two hundred fifty-seven billion, ten million, nine hundred forty-seven thousand, four hundred sixty-four".