253878951513 has 12 divisors (see below), whose sum is σ = 372076039664. Its totient is φ = 153866031000.

The previous prime is 253878951511. The next prime is 253878951517. The reversal of 253878951513 is 315159878352.

It is not a de Polignac number, because 253878951513 - 2¹ = 253878951511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253878951511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349695163 + ... + 349695888.

Almost surely, 2^253878951513 is an apocalyptic number.

It is an amenable number.

253878951513 is a deficient number, since it is larger than the sum of its proper divisors (118197088151).

253878951513 is a wasteful number, since it uses less digits than its factorization.

253878951513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699391076 (or 699391065 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 57.

The spelling of 253878951513 in words is "two hundred fifty-three billion, eight hundred seventy-eight million, nine hundred fifty-one thousand, five hundred thirteen".