22097697842 has 24 divisors (see below), whose sum is σ = 36548867628. Its totient is φ = 10012687520.

The previous prime is 22097697829. The next prime is 22097697859. The reversal of 22097697842 is 24879679022.

It can be written as a sum of positive squares in 2 ways, for example, as 13804135081 + 8293562761 = 117491^2 + 91069^2 .

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, 67313 + ... + 220740.

Almost surely, 2^22097697842 is an apocalyptic number.

22097697842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22097697842 is a deficient number, since it is larger than the sum of its proper divisors (14451169786).

22097697842 is a wasteful number, since it uses less digits than its factorization.

22097697842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288394 (or 288383 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 22097697842 in words is "twenty-two billion, ninety-seven million, six hundred ninety-seven thousand, eight hundred forty-two".