20446294746436 has 24 divisors (see below), whose sum is σ = 38670531208344. Its totient is φ = 9403168669440.

The previous prime is 20446294746431. The next prime is 20446294746439. The reversal of 20446294746436 is 63464749264402.

It can be written as a sum of positive squares in 4 ways, for example, as 7434042183936 + 13012252562500 = 2726544^2 + 3607250^2 .

It is not an unprimeable number, because it can be changed into a prime (20446294746431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699625915 + ... + 699655138.

It is an arithmetic number, because the mean of its divisors is an integer number (1611272133681).

Almost surely, 2^{20446294746436} is an apocalyptic number.

20446294746436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20446294746436 is a deficient number, since it is larger than the sum of its proper divisors (18224236461908).

20446294746436 is a wasteful number, since it uses less digits than its factorization.

20446294746436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399281351 (or 1399281349 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 61.

The spelling of 20446294746436 in words is "twenty trillion, four hundred forty-six billion, two hundred ninety-four million, seven hundred forty-six thousand, four hundred thirty-six".