7742319734739 has 4 divisors (see below), whose sum is σ = 10323092979656. Its totient is φ = 5161546489824.

The previous prime is 7742319734719. The next prime is 7742319734759. The reversal of 7742319734739 is 9374379132477.

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

It is an interprime number because it is at equal distance from previous prime (7742319734719) and next prime (7742319734759).

It is not a de Polignac number, because 7742319734739 - 2⁸ = 7742319734483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7742319734739.

It is not an unprimeable number, because it can be changed into a prime (7742319734719) 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, 1290386622454 + ... + 1290386622459.

It is an arithmetic number, because the mean of its divisors is an integer number (2580773244914).

Almost surely, 2^{7742319734739} is an apocalyptic number.

7742319734739 is a deficient number, since it is larger than the sum of its proper divisors (2580773244917).

7742319734739 is a wasteful number, since it uses less digits than its factorization.

7742319734739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580773244916.

The product of its digits is 168031584, while the sum is 66.

The spelling of 7742319734739 in words is "seven trillion, seven hundred forty-two billion, three hundred nineteen million, seven hundred thirty-four thousand, seven hundred thirty-nine".