1131385862664 has 48 divisors (see below), whose sum is σ = 3114402352620. Its totient is φ = 370946183040.

The previous prime is 1131385862609. The next prime is 1131385862791. The reversal of 1131385862664 is 4662685831311.

It is a happy number.

1131385862664 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 3 + 8 + 5 + 8 + 626 + 6 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1033129944900 + 98255917764 = 1016430^2 + 313458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1131385862664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128796367 + ... + 128805150.

Almost surely, 2^{1131385862664} is an apocalyptic number.

It is an amenable number.

1131385862664 is an abundant number, since it is smaller than the sum of its proper divisors (1983016489956).

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

1131385862664 is a wasteful number, since it uses less digits than its factorization.

1131385862664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257601590 (or 257601583 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 1131385862664 in words is "one trillion, one hundred thirty-one billion, three hundred eighty-five million, eight hundred sixty-two thousand, six hundred sixty-four".