11858798455 has 24 divisors (see below), whose sum is σ = 16606909872. Its totient is φ = 8105715072.

The previous prime is 11858798431. The next prime is 11858798461. The reversal of 11858798455 is 55489785811.

It is not a de Polignac number, because 11858798455 - 2⁷ = 11858798327 is a prime.

It is a super-2 number, since 2×11858798455² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11858798393 and 11858798402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637 + ... + 154006.

It is an arithmetic number, because the mean of its divisors is an integer number (691954578).

Almost surely, 2^11858798455 is an apocalyptic number.

11858798455 is a deficient number, since it is larger than the sum of its proper divisors (4748111417).

11858798455 is a wasteful number, since it uses less digits than its factorization.

11858798455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154975 (or 154968 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 61.

The spelling of 11858798455 in words is "eleven billion, eight hundred fifty-eight million, seven hundred ninety-eight thousand, four hundred fifty-five".