22087009980 has 72 divisors (see below), whose sum is σ = 76568305632. Its totient is φ = 5048459136.

The previous prime is 22087009969. The next prime is 22087009981. The reversal of 22087009980 is 8990078022.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22087009981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8763427 + ... + 8765946.

Almost surely, 2^22087009980 is an apocalyptic number.

22087009980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22087009980 is an abundant number, since it is smaller than the sum of its proper divisors (54481295652).

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

22087009980 is a wasteful number, since it uses less digits than its factorization.

22087009980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17529395 (or 17529390 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 22087009980 in words is "twenty-two billion, eighty-seven million, nine thousand, nine hundred eighty".