1152764437889 has 16 divisors (see below), whose sum is σ = 1248764227920. Its totient is φ = 1060066775040.

The previous prime is 1152764437871. The next prime is 1152764437901. The reversal of 1152764437889 is 9887344672511.

It can be written as a sum of positive squares in 8 ways, for example, as 67381776400 + 1085382661489 = 259580^2 + 1041817^2 .

It is not a de Polignac number, because 1152764437889 - 2²⁰ = 1152763389313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152764437859) 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 15 ways as a sum of consecutive naturals, for example, 2437274 + ... + 2871555.

It is an arithmetic number, because the mean of its divisors is an integer number (78047764245).

Almost surely, 2^{1152764437889} is an apocalyptic number.

It is an amenable number.

1152764437889 is a deficient number, since it is larger than the sum of its proper divisors (95999790031).

1152764437889 is a wasteful number, since it uses less digits than its factorization.

1152764437889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309140.

The product of its digits is 81285120, while the sum is 65.

The spelling of 1152764437889 in words is "one trillion, one hundred fifty-two billion, seven hundred sixty-four million, four hundred thirty-seven thousand, eight hundred eighty-nine".