1131145611651 has 64 divisors (see below), whose sum is σ = 1836622233600. Its totient is φ = 682358580000.

The previous prime is 1131145611619. The next prime is 1131145611677. The reversal of 1131145611651 is 1561165411311.

1131145611651 is a `hidden beast` number, since 1 + 1 + 31 + 1 + 4 + 5 + 611 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 1131145611651 - 2⁵ = 1131145611619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131145615651) 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 63 ways as a sum of consecutive naturals, for example, 68467170 + ... + 68483688.

It is an arithmetic number, because the mean of its divisors is an integer number (28697222400).

Almost surely, 2^{1131145611651} is an apocalyptic number.

1131145611651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131145611651 is a deficient number, since it is larger than the sum of its proper divisors (705476621949).

1131145611651 is a wasteful number, since it uses less digits than its factorization.

1131145611651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17597 (or 17591 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The spelling of 1131145611651 in words is "one trillion, one hundred thirty-one billion, one hundred forty-five million, six hundred eleven thousand, six hundred fifty-one".