253974499427 has 4 divisors (see below), whose sum is σ = 277063090296. Its totient is φ = 230885908560.

The previous prime is 253974499393. The next prime is 253974499433. The reversal of 253974499427 is 724994479352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253974499427 - 2¹² = 253974495331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253974499477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11544295418 + ... + 11544295439.

It is an arithmetic number, because the mean of its divisors is an integer number (69265772574).

Almost surely, 2^253974499427 is an apocalyptic number.

253974499427 is a deficient number, since it is larger than the sum of its proper divisors (23088590869).

253974499427 is a wasteful number, since it uses less digits than its factorization.

253974499427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23088590868.

The product of its digits is 137168640, while the sum is 65.

The spelling of 253974499427 in words is "two hundred fifty-three billion, nine hundred seventy-four million, four hundred ninety-nine thousand, four hundred twenty-seven".