22154355540 has 72 divisors (see below), whose sum is σ = 67346942208. Its totient is φ = 5895046080.

The previous prime is 22154355539. The next prime is 22154355649. The reversal of 22154355540 is 4555345122.

22154355540 is a `hidden beast` number, since 2 + 21 + 5 + 43 + 55 + 540 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22154355495 and 22154355504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49576 + ... + 216255.

Almost surely, 2^22154355540 is an apocalyptic number.

22154355540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22154355540 is an abundant number, since it is smaller than the sum of its proper divisors (45192586668).

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

22154355540 is a wasteful number, since it uses less digits than its factorization.

22154355540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266309 (or 266304 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 22154355540 in words is "twenty-two billion, one hundred fifty-four million, three hundred fifty-five thousand, five hundred forty".