20222899878 has 16 divisors (see below), whose sum is σ = 40452526080. Its totient is φ = 6739845576.

The previous prime is 20222899877. The next prime is 20222899913. The reversal of 20222899878 is 87899822202.

It is a super-2 number, since 2×20222899878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222899877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240750 + ... + 313697.

It is an arithmetic number, because the mean of its divisors is an integer number (2528282880).

Almost surely, 2^20222899878 is an apocalyptic number.

20222899878 is an abundant number, since it is smaller than the sum of its proper divisors (20229626202).

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

20222899878 is a wasteful number, since it uses less digits than its factorization.

20222899878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560531.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 20222899878 in words is "twenty billion, two hundred twenty-two million, eight hundred ninety-nine thousand, eight hundred seventy-eight".