11349378855 has 32 divisors (see below), whose sum is σ = 20181611520. Its totient is φ = 6051520800.

The previous prime is 11349378847. The next prime is 11349378863. The reversal of 11349378855 is 55887394311.

11349378855 is a `hidden beast` number, since 1 + 1 + 3 + 493 + 78 + 85 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (11349378847) and next prime (11349378863).

It is not a de Polignac number, because 11349378855 - 2³ = 11349378847 is a prime.

It is a super-2 number, since 2×11349378855² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 751630 + ... + 766580.

It is an arithmetic number, because the mean of its divisors is an integer number (630675360).

Almost surely, 2^11349378855 is an apocalyptic number.

11349378855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11349378855 is a deficient number, since it is larger than the sum of its proper divisors (8832232665).

11349378855 is a wasteful number, since it uses less digits than its factorization.

11349378855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20588 (or 20582 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 11349378855 in words is "eleven billion, three hundred forty-nine million, three hundred seventy-eight thousand, eight hundred fifty-five".