40022821998 has 24 divisors (see below), whose sum is σ = 86726212248. Its totient is φ = 13339387152.

The previous prime is 40022821997. The next prime is 40022822009. The reversal of 40022821998 is 89912822004.

It is a happy number.

40022821998 is a `hidden beast` number, since 400 + 2 + 28 + 219 + 9 + 8 = 666.

40022821998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40022821997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35061 + ... + 285087.

It is an arithmetic number, because the mean of its divisors is an integer number (3613592177).

Almost surely, 2^40022821998 is an apocalyptic number.

40022821998 is an abundant number, since it is smaller than the sum of its proper divisors (46703390250).

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

40022821998 is a wasteful number, since it uses less digits than its factorization.

40022821998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258928 (or 258925 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 40022821998 in words is "forty billion, twenty-two million, eight hundred twenty-one thousand, nine hundred ninety-eight".