251420134426492 has 24 divisors (see below), whose sum is σ = 442264982726000. Its totient is φ = 125060374538496.

The previous prime is 251420134426481. The next prime is 251420134426541. The reversal of 251420134426492 is 294624431024152.

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, 207363642 + ... + 208572577.

Almost surely, 2^{251420134426492} is an apocalyptic number.

It is an amenable number.

251420134426492 is a deficient number, since it is larger than the sum of its proper divisors (190844848299508).

251420134426492 is a wasteful number, since it uses less digits than its factorization.

251420134426492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415937005 (or 415937003 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 251420134426492 in words is "two hundred fifty-one trillion, four hundred twenty billion, one hundred thirty-four million, four hundred twenty-six thousand, four hundred ninety-two".