22081588877778 has 32 divisors (see below), whose sum is σ = 45590317435392. Its totient is φ = 7122699273600.

The previous prime is 22081588877771. The next prime is 22081588877797. The reversal of 22081588877778 is 87777888518022.

It is not an unprimeable number, because it can be changed into a prime (22081588877771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99198 + ... + 6646278.

It is an arithmetic number, because the mean of its divisors is an integer number (1424697419856).

Almost surely, 2^{22081588877778} is an apocalyptic number.

22081588877778 is an abundant number, since it is smaller than the sum of its proper divisors (23508728557614).

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

22081588877778 is a wasteful number, since it uses less digits than its factorization.

22081588877778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565250.

The product of its (nonzero) digits is 1573519360, while the sum is 78.

The spelling of 22081588877778 in words is "twenty-two trillion, eighty-one billion, five hundred eighty-eight million, eight hundred seventy-seven thousand, seven hundred seventy-eight".