20206444408 has 8 divisors (see below), whose sum is σ = 37887083280. Its totient is φ = 10103222200.

The previous prime is 20206444393. The next prime is 20206444483. The reversal of 20206444408 is 80444460202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20206444408² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262902768 + ... + 1262902783.

It is an arithmetic number, because the mean of its divisors is an integer number (4735885410).

Almost surely, 2^20206444408 is an apocalyptic number.

It is an amenable number.

20206444408 is a deficient number, since it is larger than the sum of its proper divisors (17680638872).

20206444408 is a wasteful number, since it uses less digits than its factorization.

20206444408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525805557 (or 2525805553 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

The spelling of 20206444408 in words is "twenty billion, two hundred six million, four hundred forty-four thousand, four hundred eight".