23139387796 has 120 divisors (see below), whose sum is σ = 49212001440. Its totient is φ = 9507960000.

The previous prime is 23139387787. The next prime is 23139387881. The reversal of 23139387796 is 69778393132.

It is a happy number.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a self number, because there is not a number n which added to its sum of digits gives 23139387796.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69907351 + ... + 69907681.

It is an arithmetic number, because the mean of its divisors is an integer number (410100012).

Almost surely, 2^23139387796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23139387796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24606000720).

23139387796 is an abundant number, since it is smaller than the sum of its proper divisors (26072613644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23139387796 is a wasteful number, since it uses less digits than its factorization.

23139387796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 620 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 58.

The spelling of 23139387796 in words is "twenty-three billion, one hundred thirty-nine million, three hundred eighty-seven thousand, seven hundred ninety-six".