11543087397 has 32 divisors (see below), whose sum is σ = 16865985024. Its totient is φ = 6993100800.

The previous prime is 11543087383. The next prime is 11543087407. The reversal of 11543087397 is 79378034511.

It is not a de Polignac number, because 11543087397 - 2⁶ = 11543087333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543087317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174372 + ... + 231282.

It is an arithmetic number, because the mean of its divisors is an integer number (527062032).

Almost surely, 2^11543087397 is an apocalyptic number.

11543087397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11543087397 is a deficient number, since it is larger than the sum of its proper divisors (5322897627).

11543087397 is a wasteful number, since it uses less digits than its factorization.

11543087397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57069.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 11543087397 in words is "eleven billion, five hundred forty-three million, eighty-seven thousand, three hundred ninety-seven".