1139753391865 has 16 divisors (see below), whose sum is σ = 1492534584576. Its totient is φ = 828637235200.

The previous prime is 1139753391863. The next prime is 1139753391869. The reversal of 1139753391865 is 5681933579311.

It is a happy number.

It is not a de Polignac number, because 1139753391865 - 2¹ = 1139753391863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139753391863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3261256 + ... + 3593785.

It is an arithmetic number, because the mean of its divisors is an integer number (93283411536).

Almost surely, 2^{1139753391865} is an apocalyptic number.

It is an amenable number.

1139753391865 is a deficient number, since it is larger than the sum of its proper divisors (352781192711).

1139753391865 is a wasteful number, since it uses less digits than its factorization.

1139753391865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6858080.

The product of its digits is 18370800, while the sum is 61.

The spelling of 1139753391865 in words is "one trillion, one hundred thirty-nine billion, seven hundred fifty-three million, three hundred ninety-one thousand, eight hundred sixty-five".