22245556788890 has 16 divisors (see below), whose sum is σ = 40042055924640. Its totient is φ = 8898210781200.

The previous prime is 22245556788869. The next prime is 22245556788991. The reversal of 22245556788890 is 9888765554222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13857641 + ... + 15379379.

It is an arithmetic number, because the mean of its divisors is an integer number (2502628495290).

Almost surely, 2^{22245556788890} is an apocalyptic number.

22245556788890 is a deficient number, since it is larger than the sum of its proper divisors (17796499135750).

22245556788890 is a wasteful number, since it uses less digits than its factorization.

22245556788890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983597.

The product of its (nonzero) digits is 774144000, while the sum is 71.

The spelling of 22245556788890 in words is "twenty-two trillion, two hundred forty-five billion, five hundred fifty-six million, seven hundred eighty-eight thousand, eight hundred ninety".