257021342326 has 32 divisors (see below), whose sum is σ = 448223818752. Its totient is φ = 108257845920.

The previous prime is 257021342321. The next prime is 257021342329. The reversal of 257021342326 is 623243120752.

It is a super-2 number, since 2×257021342326² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257021342321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92746 + ... + 722941.

It is an arithmetic number, because the mean of its divisors is an integer number (14006994336).

Almost surely, 2^257021342326 is an apocalyptic number.

257021342326 is a deficient number, since it is larger than the sum of its proper divisors (191202476426).

257021342326 is a wasteful number, since it uses less digits than its factorization.

257021342326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816084.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 257021342326 in words is "two hundred fifty-seven billion, twenty-one million, three hundred forty-two thousand, three hundred twenty-six".