20004166256 has 10 divisors (see below), whose sum is σ = 38758072152. Its totient is φ = 10002083120.

The previous prime is 20004166253. The next prime is 20004166319. The reversal of 20004166256 is 65266140002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004166253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625130180 + ... + 625130211.

Almost surely, 2^20004166256 is an apocalyptic number.

It is an amenable number.

20004166256 is a deficient number, since it is larger than the sum of its proper divisors (18753905896).

20004166256 is a wasteful number, since it uses less digits than its factorization.

20004166256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250260399 (or 1250260393 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 20004166256 in words is "twenty billion, four million, one hundred sixty-six thousand, two hundred fifty-six".