22697544672 has 72 divisors (see below), whose sum is σ = 70413983640. Its totient is φ = 6878042880.

The previous prime is 22697544659. The next prime is 22697544689. The reversal of 22697544672 is 27644579622.

It is a happy number.

22697544672 is a `hidden beast` number, since 2 + 2 + 6 + 97 + 544 + 6 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3579147 + ... + 3585482.

It is an arithmetic number, because the mean of its divisors is an integer number (977971995).

Almost surely, 2^22697544672 is an apocalyptic number.

22697544672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22697544672 is an abundant number, since it is smaller than the sum of its proper divisors (47716438968).

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

22697544672 is a wasteful number, since it uses less digits than its factorization.

22697544672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164656 (or 7164645 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 22697544672 in words is "twenty-two billion, six hundred ninety-seven million, five hundred forty-four thousand, six hundred seventy-two".