251383741975 has 12 divisors (see below), whose sum is σ = 311853049056. Its totient is φ = 201018471680.

The previous prime is 251383741969. The next prime is 251383741991. The reversal of 251383741975 is 579147383152.

It is not a de Polignac number, because 251383741975 - 2²⁷ = 251249524247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2155087 + ... + 2268736.

It is an arithmetic number, because the mean of its divisors is an integer number (25987754088).

Almost surely, 2^251383741975 is an apocalyptic number.

251383741975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

251383741975 is a deficient number, since it is larger than the sum of its proper divisors (60469307081).

251383741975 is a wasteful number, since it uses less digits than its factorization.

251383741975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426106 (or 4426101 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 55.

The spelling of 251383741975 in words is "two hundred fifty-one billion, three hundred eighty-three million, seven hundred forty-one thousand, nine hundred seventy-five".