1131552051999 has 32 divisors (see below), whose sum is σ = 1550109947904. Its totient is φ = 733963100640.

The previous prime is 1131552051997. The next prime is 1131552052003. The reversal of 1131552051999 is 9991502551311.

It is not a de Polignac number, because 1131552051999 - 2¹ = 1131552051997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131552051997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92267542 + ... + 92279804.

It is an arithmetic number, because the mean of its divisors is an integer number (48440935872).

Almost surely, 2^{1131552051999} is an apocalyptic number.

1131552051999 is a deficient number, since it is larger than the sum of its proper divisors (418557895905).

1131552051999 is a wasteful number, since it uses less digits than its factorization.

1131552051999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17947.

The product of its (nonzero) digits is 546750, while the sum is 51.

The spelling of 1131552051999 in words is "one trillion, one hundred thirty-one billion, five hundred fifty-two million, fifty-one thousand, nine hundred ninety-nine".