11155055400 has 96 divisors (see below), whose sum is σ = 38422987200. Its totient is φ = 2974680000.

The previous prime is 11155055381. The next prime is 11155055419. The reversal of 11155055400 is 455055111.

11155055400 is a `hidden beast` number, since 1 + 115 + 5 + 0 + 5 + 540 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (11155055381) and next prime (11155055419).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 1027476 + ... + 1038275.

It is an arithmetic number, because the mean of its divisors is an integer number (400239450).

Almost surely, 2^11155055400 is an apocalyptic number.

11155055400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11155055400 is an abundant number, since it is smaller than the sum of its proper divisors (27267931800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11155055400 is a wasteful number, since it uses less digits than its factorization.

11155055400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065776 (or 2065761 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The spelling of 11155055400 in words is "eleven billion, one hundred fifty-five million, fifty-five thousand, four hundred".