23405005238739 has 16 divisors (see below), whose sum is σ = 31646407104000. Its totient is φ = 15383472917120.

The previous prime is 23405005238707. The next prime is 23405005238803. The reversal of 23405005238739 is 93783250050432.

It is a cyclic number.

It is not a de Polignac number, because 23405005238739 - 2⁵ = 23405005238707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23405005238691 and 23405005238700.

It is not an unprimeable number, because it can be changed into a prime (23405005238339) 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 15 ways as a sum of consecutive naturals, for example, 49456762 + ... + 49927760.

It is an arithmetic number, because the mean of its divisors is an integer number (1977900444000).

Almost surely, 2^{23405005238739} is an apocalyptic number.

23405005238739 is a deficient number, since it is larger than the sum of its proper divisors (8241401865261).

23405005238739 is a wasteful number, since it uses less digits than its factorization.

23405005238739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704370.

The product of its (nonzero) digits is 5443200, while the sum is 51.

The spelling of 23405005238739 in words is "twenty-three trillion, four hundred five billion, five million, two hundred thirty-eight thousand, seven hundred thirty-nine".