257167018064 has 80 divisors (see below), whose sum is σ = 560487501504. Its totient is φ = 113306419200.

The previous prime is 257167018057. The next prime is 257167018079. The reversal of 257167018064 is 460810761752.

It is a super-2 number, since 2×257167018064² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608144 + ... + 940304.

Almost surely, 2^257167018064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257167018064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280243750752).

257167018064 is an abundant number, since it is smaller than the sum of its proper divisors (303320483440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257167018064 is a wasteful number, since it uses less digits than its factorization.

257167018064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332316 (or 332310 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 257167018064 in words is "two hundred fifty-seven billion, one hundred sixty-seven million, eighteen thousand, sixty-four".