23394139529 has 6 divisors (see below), whose sum is σ = 23965731594. Its totient is φ = 22822595280.

The previous prime is 23394139513. The next prime is 23394139541. The reversal of 23394139529 is 92593149332.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14264719225 + 9129420304 = 119435^2 + 95548^2 .

It is not a de Polignac number, because 23394139529 - 2⁴ = 23394139513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23394132529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 967424 + ... + 991310.

It is an arithmetic number, because the mean of its divisors is an integer number (3994288599).

Almost surely, 2^23394139529 is an apocalyptic number.

It is an amenable number.

23394139529 is a deficient number, since it is larger than the sum of its proper divisors (571592065).

23394139529 is an frugal number, since it uses more digits than its factorization.

23394139529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47815 (or 23928 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 50.

The spelling of 23394139529 in words is "twenty-three billion, three hundred ninety-four million, one hundred thirty-nine thousand, five hundred twenty-nine".