11854497917 has 8 divisors (see below), whose sum is σ = 12543077760. Its totient is φ = 11172384000.

The previous prime is 11854497913. The next prime is 11854497923. The reversal of 11854497917 is 71979445811.

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

It is not a de Polignac number, because 11854497917 - 2² = 11854497913 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11854497913) 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, 1612709 + ... + 1620042.

It is an arithmetic number, because the mean of its divisors is an integer number (1567884720).

Almost surely, 2^11854497917 is an apocalyptic number.

It is an amenable number.

11854497917 is a deficient number, since it is larger than the sum of its proper divisors (688579843).

11854497917 is a wasteful number, since it uses less digits than its factorization.

11854497917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232963.

The product of its digits is 2540160, while the sum is 56.

The spelling of 11854497917 in words is "eleven billion, eight hundred fifty-four million, four hundred ninety-seven thousand, nine hundred seventeen".