11897255433 has 24 divisors (see below), whose sum is σ = 18230919744. Its totient is φ = 6760480320.

The previous prime is 11897255431. The next prime is 11897255443. The reversal of 11897255433 is 33455279811.

It is not a de Polignac number, because 11897255433 - 2¹ = 11897255431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11897255431) 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, 679335 + ... + 696627.

It is an arithmetic number, because the mean of its divisors is an integer number (759621656).

Almost surely, 2^11897255433 is an apocalyptic number.

It is an amenable number.

11897255433 is a deficient number, since it is larger than the sum of its proper divisors (6333664311).

11897255433 is an equidigital number, since it uses as much as digits as its factorization.

11897255433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17665 (or 17484 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The spelling of 11897255433 in words is "eleven billion, eight hundred ninety-seven million, two hundred fifty-five thousand, four hundred thirty-three".