11161772400 has 60 divisors (see below), whose sum is σ = 35754881432. Its totient is φ = 2976472320.

The previous prime is 11161772359. The next prime is 11161772417. The reversal of 11161772400 is 427716111.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4649539 + ... + 4651938.

Almost surely, 2^11161772400 is an apocalyptic number.

11161772400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11161772400 is an abundant number, since it is smaller than the sum of its proper divisors (24593109032).

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

11161772400 is a wasteful number, since it uses less digits than its factorization.

11161772400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301498 (or 9301487 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The spelling of 11161772400 in words is "eleven billion, one hundred sixty-one million, seven hundred seventy-two thousand, four hundred".