22801987297 has 4 divisors (see below), whose sum is σ = 22802303236. Its totient is φ = 22801671360.

The previous prime is 22801987291. The next prime is 22801987309. The reversal of 22801987297 is 79278910822.

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 13285789696 + 9516197601 = 115264^2 + 97551^2 .

It is a cyclic number.

It is not a de Polignac number, because 22801987297 - 2¹⁵ = 22801954529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22801987291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9397 + ... + 213757.

It is an arithmetic number, because the mean of its divisors is an integer number (5700575809).

Almost surely, 2^22801987297 is an apocalyptic number.

It is an amenable number.

22801987297 is a deficient number, since it is larger than the sum of its proper divisors (315939).

22801987297 is a wasteful number, since it uses less digits than its factorization.

22801987297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315938.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 22801987297 in words is "twenty-two billion, eight hundred one million, nine hundred eighty-seven thousand, two hundred ninety-seven".