20663462144434 has 16 divisors (see below), whose sum is σ = 32961751853400. Its totient is φ = 9681519377664.

The previous prime is 20663462144323. The next prime is 20663462144441. The reversal of 20663462144434 is 43444126436602.

It can be written as a sum of positive squares in 4 ways, for example, as 19598019111225 + 1065443033209 = 4426965^2 + 1032203^2 .

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, 1326954849 + ... + 1326970420.

Almost surely, 2^{20663462144434} is an apocalyptic number.

20663462144434 is a deficient number, since it is larger than the sum of its proper divisors (12298289708966).

20663462144434 is a wasteful number, since it uses less digits than its factorization.

20663462144434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653925517.

The product of its (nonzero) digits is 7962624, while the sum is 49.

The spelling of 20663462144434 in words is "twenty trillion, six hundred sixty-three billion, four hundred sixty-two million, one hundred forty-four thousand, four hundred thirty-four".