2623390987739 has 4 divisors (see below), whose sum is σ = 2761464197640. Its totient is φ = 2485317777840.

The previous prime is 2623390987733. The next prime is 2623390987747. The reversal of 2623390987739 is 9377890933262.

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

It is a cyclic number.

It is not a de Polignac number, because 2623390987739 - 2³⁶ = 2554671511003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2623390987733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69036604922 + ... + 69036604959.

It is an arithmetic number, because the mean of its divisors is an integer number (690366049410).

Almost surely, 2^{2623390987739} is an apocalyptic number.

2623390987739 is a deficient number, since it is larger than the sum of its proper divisors (138073209901).

2623390987739 is a wasteful number, since it uses less digits than its factorization.

2623390987739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138073209900.

The product of its (nonzero) digits is 185177664, while the sum is 68.

The spelling of 2623390987739 in words is "two trillion, six hundred twenty-three billion, three hundred ninety million, nine hundred eighty-seven thousand, seven hundred thirty-nine".