23742537137 has 4 divisors (see below), whose sum is σ = 25900949616. Its totient is φ = 21584124660.

The previous prime is 23742537019. The next prime is 23742537149. The reversal of 23742537137 is 73173524732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23742537137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23742537187) 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, 1079206223 + ... + 1079206244.

It is an arithmetic number, because the mean of its divisors is an integer number (6475237404).

Almost surely, 2^23742537137 is an apocalyptic number.

It is an amenable number.

23742537137 is a deficient number, since it is larger than the sum of its proper divisors (2158412479).

23742537137 is a wasteful number, since it uses less digits than its factorization.

23742537137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158412478.

The product of its digits is 740880, while the sum is 44.

The spelling of 23742537137 in words is "twenty-three billion, seven hundred forty-two million, five hundred thirty-seven thousand, one hundred thirty-seven".