253438855475 has 24 divisors (see below), whose sum is σ = 339039727152. Its totient is φ = 186822288000.

The previous prime is 253438855469. The next prime is 253438855477. The reversal of 253438855475 is 574558834352.

It is a happy number.

It is not a de Polignac number, because 253438855475 - 2¹⁰ = 253438854451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253438855477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509576 + ... + 875525.

It is an arithmetic number, because the mean of its divisors is an integer number (14126655298).

Almost surely, 2^253438855475 is an apocalyptic number.

253438855475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

253438855475 is a deficient number, since it is larger than the sum of its proper divisors (85600871677).

253438855475 is a wasteful number, since it uses less digits than its factorization.

253438855475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385687 (or 1385682 counting only the distinct ones).

The product of its digits is 80640000, while the sum is 59.

The spelling of 253438855475 in words is "two hundred fifty-three billion, four hundred thirty-eight million, eight hundred fifty-five thousand, four hundred seventy-five".