20442244986 has 12 divisors (see below), whose sum is σ = 44291530842. Its totient is φ = 6814081656.

The previous prime is 20442244973. The next prime is 20442244987. The reversal of 20442244986 is 68944224402.

It can be written as a sum of positive squares in only one way, i.e., 18284177961 + 2158067025 = 135219^2 + 46455^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20442244987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567840121 + ... + 567840156.

Almost surely, 2^20442244986 is an apocalyptic number.

20442244986 is an abundant number, since it is smaller than the sum of its proper divisors (23849285856).

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

20442244986 is a wasteful number, since it uses less digits than its factorization.

20442244986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135680285 (or 1135680282 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 20442244986 in words is "twenty billion, four hundred forty-two million, two hundred forty-four thousand, nine hundred eighty-six".