22155522550 has 48 divisors (see below), whose sum is σ = 47176980480. Its totient is φ = 7583168160.

The previous prime is 22155522541. The next prime is 22155522569. The reversal of 22155522550 is 5522555122.

It is a congruent number.

It is an unprimeable number.

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, 151531 + ... + 259369.

It is an arithmetic number, because the mean of its divisors is an integer number (982853760).

Almost surely, 2^22155522550 is an apocalyptic number.

22155522550 is an abundant number, since it is smaller than the sum of its proper divisors (25021457930).

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

22155522550 is a wasteful number, since it uses less digits than its factorization.

22155522550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108445 (or 108440 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 34.

The spelling of 22155522550 in words is "twenty-two billion, one hundred fifty-five million, five hundred twenty-two thousand, five hundred fifty".