1131055472772 has 120 divisors (see below), whose sum is σ = 3065517692160. Its totient is φ = 363262605120.

The previous prime is 1131055472761. The next prime is 1131055472831. The reversal of 1131055472772 is 2772745501311.

1131055472772 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 0 + 554 + 7 + 27 + 72 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2054203 + ... + 2545949.

It is an arithmetic number, because the mean of its divisors is an integer number (25545980768).

Almost surely, 2^{1131055472772} is an apocalyptic number.

1131055472772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131055472772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532758846080).

1131055472772 is an abundant number, since it is smaller than the sum of its proper divisors (1934462219388).

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

1131055472772 is a wasteful number, since it uses less digits than its factorization.

1131055472772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492023 (or 492012 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The spelling of 1131055472772 in words is "one trillion, one hundred thirty-one billion, fifty-five million, four hundred seventy-two thousand, seven hundred seventy-two".