20001897120412 has 6 divisors (see below), whose sum is σ = 35003319960728. Its totient is φ = 10000948560204.

The previous prime is 20001897120397. The next prime is 20001897120449. The reversal of 20001897120412 is 21402179810002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500237140048 + ... + 2500237140055.

Almost surely, 2^{20001897120412} is an apocalyptic number.

It is an amenable number.

20001897120412 is a deficient number, since it is larger than the sum of its proper divisors (15001422840316).

20001897120412 is a wasteful number, since it uses less digits than its factorization.

20001897120412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000474280107 (or 5000474280105 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 20001897120412 in words is "twenty trillion, one billion, eight hundred ninety-seven million, one hundred twenty thousand, four hundred twelve".