20446222317478 has 16 divisors (see below), whose sum is σ = 31101976926720. Its totient is φ = 10078902981000.

The previous prime is 20446222317421. The next prime is 20446222317497. The reversal of 20446222317478 is 87471322264402.

It is a congruent number.

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, 5028613 + ... + 8135071.

It is an arithmetic number, because the mean of its divisors is an integer number (1943873557920).

Almost surely, 2^{20446222317478} is an apocalyptic number.

20446222317478 is a deficient number, since it is larger than the sum of its proper divisors (10655754609242).

20446222317478 is a wasteful number, since it uses less digits than its factorization.

20446222317478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152883.

The product of its (nonzero) digits is 7225344, while the sum is 52.

The spelling of 20446222317478 in words is "twenty trillion, four hundred forty-six billion, two hundred twenty-two million, three hundred seventeen thousand, four hundred seventy-eight".