20422259858 has 64 divisors (see below), whose sum is σ = 43294970880. Its totient is φ = 6958094400.

The previous prime is 20422259857. The next prime is 20422259861. The reversal of 20422259858 is 85895222402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20422259857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230408 + ... + 306483.

It is an arithmetic number, because the mean of its divisors is an integer number (676483920).

Almost surely, 2^20422259858 is an apocalyptic number.

20422259858 is an abundant number, since it is smaller than the sum of its proper divisors (22872711022).

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

20422259858 is a wasteful number, since it uses less digits than its factorization.

20422259858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536943.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 20422259858 in words is "twenty billion, four hundred twenty-two million, two hundred fifty-nine thousand, eight hundred fifty-eight".