22013778072 has 128 divisors (see below), whose sum is σ = 64844640000. Its totient is φ = 6139722240.

The previous prime is 22013778053. The next prime is 22013778107. The reversal of 22013778072 is 27087731022.

It is a super-3 number, since 3×22013778072³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 22013778072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1188579 + ... + 1206957.

It is an arithmetic number, because the mean of its divisors is an integer number (506598750).

Almost surely, 2^22013778072 is an apocalyptic number.

22013778072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22013778072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32422320000).

22013778072 is an abundant number, since it is smaller than the sum of its proper divisors (42830861928).

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

22013778072 is a wasteful number, since it uses less digits than its factorization.

22013778072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761 (or 18757 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The spelling of 22013778072 in words is "twenty-two billion, thirteen million, seven hundred seventy-eight thousand, seventy-two".