11854411921 has 8 divisors (see below), whose sum is σ = 13025124000. Its totient is φ = 10699206240.

The previous prime is 11854411903. The next prime is 11854411931. The reversal of 11854411921 is 12911445811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11854411921 - 2⁹ = 11854411409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11854411901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3874996 + ... + 3878053.

It is an arithmetic number, because the mean of its divisors is an integer number (1628140500).

Almost surely, 2^11854411921 is an apocalyptic number.

11854411921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11854411921 is a deficient number, since it is larger than the sum of its proper divisors (1170712079).

11854411921 is a wasteful number, since it uses less digits than its factorization.

11854411921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7753199.

The product of its digits is 11520, while the sum is 37.

The spelling of 11854411921 in words is "eleven billion, eight hundred fifty-four million, four hundred eleven thousand, nine hundred twenty-one".