18655996022 has 4 divisors (see below), whose sum is σ = 27983994036. Its totient is φ = 9327998010.

The previous prime is 18655996019. The next prime is 18655996031. The reversal of 18655996022 is 22069955681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22069955681 = 571 ⋅38651411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4663999004 + ... + 4663999007.

It is an arithmetic number, because the mean of its divisors is an integer number (6995998509).

Almost surely, 2^18655996022 is an apocalyptic number.

18655996022 is a deficient number, since it is larger than the sum of its proper divisors (9327998014).

18655996022 is an equidigital number, since it uses as much as digits as its factorization.

18655996022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9327998013.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 18655996022 in words is "eighteen billion, six hundred fifty-five million, nine hundred ninety-six thousand, twenty-two".