1131972554772 has 60 divisors (see below), whose sum is σ = 2959314300096. Its totient is φ = 377309592720.

The previous prime is 1131972554771. The next prime is 1131972554809. The reversal of 1131972554772 is 2774552791311.

1131972554772 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 9 + 7 + 25 + 547 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131972554771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11238997 + ... + 11339267.

Almost surely, 2^{1131972554772} is an apocalyptic number.

1131972554772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131972554772 is an abundant number, since it is smaller than the sum of its proper divisors (1827341745324).

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

1131972554772 is a wasteful number, since it uses less digits than its factorization.

1131972554772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135130 (or 135119 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The spelling of 1131972554772 in words is "one trillion, one hundred thirty-one billion, nine hundred seventy-two million, five hundred fifty-four thousand, seven hundred seventy-two".