22148841780 has 72 divisors (see below), whose sum is σ = 72352890792. Its totient is φ = 5452022016.

The previous prime is 22148841779. The next prime is 22148841821. The reversal of 22148841780 is 8714884122.

22148841780 is a `hidden beast` number, since 221 + 4 + 8 + 8 + 417 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1090188324 + 21058653456 = 33018^2 + 145116^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4730319 + ... + 4734998.

It is an arithmetic number, because the mean of its divisors is an integer number (1004901261).

Almost surely, 2^22148841780 is an apocalyptic number.

22148841780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22148841780 is an abundant number, since it is smaller than the sum of its proper divisors (50204049012).

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

22148841780 is a wasteful number, since it uses less digits than its factorization.

22148841780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9465345 (or 9465340 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The spelling of 22148841780 in words is "twenty-two billion, one hundred forty-eight million, eight hundred forty-one thousand, seven hundred eighty".