22635561420 has 36 divisors (see below), whose sum is σ = 68661203520. Its totient is φ = 6036149664.

The previous prime is 22635561401. The next prime is 22635561427. The reversal of 22635561420 is 2416553622.

22635561420 is a `hidden beast` number, since 2 + 2 + 6 + 35 + 5 + 614 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22635561427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62876380 + ... + 62876739.

Almost surely, 2^22635561420 is an apocalyptic number.

22635561420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22635561420 is an abundant number, since it is smaller than the sum of its proper divisors (46025642100).

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

22635561420 is a wasteful number, since it uses less digits than its factorization.

22635561420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125753134 (or 125753129 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 22635561420 in words is "twenty-two billion, six hundred thirty-five million, five hundred sixty-one thousand, four hundred twenty".