11897513420 has 24 divisors (see below), whose sum is σ = 26906684784. Its totient is φ = 4392927936.

The previous prime is 11897513413. The next prime is 11897513447. The reversal of 11897513420 is 2431579811.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22879574 + ... + 22880093.

It is an arithmetic number, because the mean of its divisors is an integer number (1121111866).

Almost surely, 2^11897513420 is an apocalyptic number.

11897513420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11897513420 is an abundant number, since it is smaller than the sum of its proper divisors (15009171364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11897513420 is a wasteful number, since it uses less digits than its factorization.

11897513420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45759689 (or 45759687 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 11897513420 in words is "eleven billion, eight hundred ninety-seven million, five hundred thirteen thousand, four hundred twenty".