22971565780 has 96 divisors (see below), whose sum is σ = 50322843648. Its totient is φ = 8801654400.

The previous prime is 22971565777. The next prime is 22971565787. The reversal of 22971565780 is 8756517922.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22971565787) 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 31 ways as a sum of consecutive naturals, for example, 12882769 + ... + 12884551.

It is an arithmetic number, because the mean of its divisors is an integer number (524196288).

Almost surely, 2^22971565780 is an apocalyptic number.

22971565780 is a gapful number since it is divisible by the number (20) 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 22971565780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25161421824).

22971565780 is an abundant number, since it is smaller than the sum of its proper divisors (27351277868).

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

22971565780 is a wasteful number, since it uses less digits than its factorization.

22971565780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 22971565780 in words is "twenty-two billion, nine hundred seventy-one million, five hundred sixty-five thousand, seven hundred eighty".