22501636140 has 24 divisors (see below), whose sum is σ = 63004581360. Its totient is φ = 6000436288.

The previous prime is 22501636127. The next prime is 22501636151. The reversal of 22501636140 is 4163610522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22501636098 and 22501636107.

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, 187513575 + ... + 187513694.

It is an arithmetic number, because the mean of its divisors is an integer number (2625190890).

Almost surely, 2^22501636140 is an apocalyptic number.

22501636140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22501636140 is an abundant number, since it is smaller than the sum of its proper divisors (40502945220).

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

22501636140 is a wasteful number, since it uses less digits than its factorization.

22501636140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375027281 (or 375027279 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 22501636140 in words is "twenty-two billion, five hundred one million, six hundred thirty-six thousand, one hundred forty".