22851686440 has 32 divisors (see below), whose sum is σ = 56090504160. Its totient is φ = 8309704000.

The previous prime is 22851686401. The next prime is 22851686491. The reversal of 22851686440 is 4468615822.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25967386 + ... + 25968265.

It is an arithmetic number, because the mean of its divisors is an integer number (1752828255).

Almost surely, 2^22851686440 is an apocalyptic number.

22851686440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22851686440 is an abundant number, since it is smaller than the sum of its proper divisors (33238817720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22851686440 is a wasteful number, since it uses less digits than its factorization.

22851686440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51935673 (or 51935669 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 22851686440 in words is "twenty-two billion, eight hundred fifty-one million, six hundred eighty-six thousand, four hundred forty".