22556957987 has 8 divisors (see below), whose sum is σ = 23112398400. Its totient is φ = 22001768640.

The previous prime is 22556957971. The next prime is 22556958001. The reversal of 22556957987 is 78975965522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22556957987 - 2⁴ = 22556957971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22556957287) 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 7 ways as a sum of consecutive naturals, for example, 126038 + ... + 246980.

It is an arithmetic number, because the mean of its divisors is an integer number (2889049800).

Almost surely, 2^22556957987 is an apocalyptic number.

22556957987 is a deficient number, since it is larger than the sum of its proper divisors (555440413).

22556957987 is a wasteful number, since it uses less digits than its factorization.

22556957987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125533.

The product of its digits is 95256000, while the sum is 65.

The spelling of 22556957987 in words is "twenty-two billion, five hundred fifty-six million, nine hundred fifty-seven thousand, nine hundred eighty-seven".