22988117137 has 4 divisors (see below), whose sum is σ = 22988422116. Its totient is φ = 22987812160.

The previous prime is 22988117123. The next prime is 22988117147. The reversal of 22988117137 is 73171188922.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13707492241 + 9280624896 = 117079^2 + 96336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22988117137 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22988117147) 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, 51837 + ... + 220597.

It is an arithmetic number, because the mean of its divisors is an integer number (5747105529).

Almost surely, 2^22988117137 is an apocalyptic number.

It is an amenable number.

22988117137 is a deficient number, since it is larger than the sum of its proper divisors (304979).

22988117137 is a wasteful number, since it uses less digits than its factorization.

22988117137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304978.

The product of its digits is 338688, while the sum is 49.

The spelling of 22988117137 in words is "twenty-two billion, nine hundred eighty-eight million, one hundred seventeen thousand, one hundred thirty-seven".