11887254621 has 24 divisors (see below), whose sum is σ = 18735312960. Its totient is φ = 7202904000.

The previous prime is 11887254581. The next prime is 11887254623. The reversal of 11887254621 is 12645278811.

11887254621 is a `hidden beast` number, since 1 + 1 + 8 + 87 + 2 + 546 + 21 = 666.

It is not a de Polignac number, because 11887254621 - 2³⁰ = 10813512797 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887254623) 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, 639385 + ... + 657713.

It is an arithmetic number, because the mean of its divisors is an integer number (780638040).

Almost surely, 2^11887254621 is an apocalyptic number.

11887254621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11887254621 is a deficient number, since it is larger than the sum of its proper divisors (6848058339).

11887254621 is a wasteful number, since it uses less digits than its factorization.

11887254621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24897 (or 24894 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The spelling of 11887254621 in words is "eleven billion, eight hundred eighty-seven million, two hundred fifty-four thousand, six hundred twenty-one".