1139431375679 has 4 divisors (see below), whose sum is σ = 1139561888520. Its totient is φ = 1139300862840.

The previous prime is 1139431375651. The next prime is 1139431375721. The reversal of 1139431375679 is 9765731349311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1139431375679 is a prime.

It is a super-2 number, since 2×1139431375679² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139431375609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65243324 + ... + 65260785.

It is an arithmetic number, because the mean of its divisors is an integer number (284890472130).

Almost surely, 2^{1139431375679} is an apocalyptic number.

1139431375679 is a deficient number, since it is larger than the sum of its proper divisors (130512841).

1139431375679 is an equidigital number, since it uses as much as digits as its factorization.

1139431375679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130512840.

The product of its digits is 12859560, while the sum is 59.

The spelling of 1139431375679 in words is "one trillion, one hundred thirty-nine billion, four hundred thirty-one million, three hundred seventy-five thousand, six hundred seventy-nine".