11858105517 has 8 divisors (see below), whose sum is σ = 15844957824. Its totient is φ = 7888328448.

The previous prime is 11858105509. The next prime is 11858105533. The reversal of 11858105517 is 71550185811.

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

It is not a de Polignac number, because 11858105517 - 2³ = 11858105509 is a prime.

It is a super-2 number, since 2×11858105517² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11858105587) 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, 4267188 + ... + 4269965.

It is an arithmetic number, because the mean of its divisors is an integer number (1980619728).

Almost surely, 2^11858105517 is an apocalyptic number.

It is an amenable number.

11858105517 is a deficient number, since it is larger than the sum of its proper divisors (3986852307).

11858105517 is an equidigital number, since it uses as much as digits as its factorization.

11858105517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8537619.

The product of its (nonzero) digits is 56000, while the sum is 42.

The spelling of 11858105517 in words is "eleven billion, eight hundred fifty-eight million, one hundred five thousand, five hundred seventeen".