22781780805480 has 64 divisors (see below), whose sum is σ = 68348446695360. Its totient is φ = 6074865612288.

The previous prime is 22781780805449. The next prime is 22781780805503. The reversal of 22781780805480 is 8450808718722.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1651702 + ... + 6949221.

It is an arithmetic number, because the mean of its divisors is an integer number (1067944479615).

Almost surely, 2^{22781780805480} is an apocalyptic number.

22781780805480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22781780805480 is an abundant number, since it is smaller than the sum of its proper divisors (45566665889880).

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

22781780805480 is a wasteful number, since it uses less digits than its factorization.

22781780805480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8623010 (or 8623006 counting only the distinct ones).

The product of its (nonzero) digits is 16056320, while the sum is 60.

The spelling of 22781780805480 in words is "twenty-two trillion, seven hundred eighty-one billion, seven hundred eighty million, eight hundred five thousand, four hundred eighty".