22508912985 has 64 divisors (see below), whose sum is σ = 41212862208. Its totient is φ = 10392182784.

The previous prime is 22508912969. The next prime is 22508913017. The reversal of 22508912985 is 58921980522.

It is not a de Polignac number, because 22508912985 - 2⁴ = 22508912969 is a prime.

It is a super-2 number, since 2×22508912985² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 926149 + ... + 950141.

It is an arithmetic number, because the mean of its divisors is an integer number (643950972).

Almost surely, 2^22508912985 is an apocalyptic number.

It is an amenable number.

22508912985 is a deficient number, since it is larger than the sum of its proper divisors (18703949223).

22508912985 is a wasteful number, since it uses less digits than its factorization.

22508912985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24314.

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 22508912985 in words is "twenty-two billion, five hundred eight million, nine hundred twelve thousand, nine hundred eighty-five".