251042643262 has 16 divisors (see below), whose sum is σ = 401400633600. Its totient is φ = 117409682520.

The previous prime is 251042643223. The next prime is 251042643277. The reversal of 251042643262 is 262346240152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41809564 + ... + 41815567.

It is an arithmetic number, because the mean of its divisors is an integer number (25087539600).

Almost surely, 2^251042643262 is an apocalyptic number.

251042643262 is a deficient number, since it is larger than the sum of its proper divisors (150357990338).

251042643262 is a wasteful number, since it uses less digits than its factorization.

251042643262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83625231.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 251042643262 in words is "two hundred fifty-one billion, forty-two million, six hundred forty-three thousand, two hundred sixty-two".