20101643412 has 24 divisors (see below), whose sum is σ = 46907008512. Its totient is φ = 6700094400.

The previous prime is 20101643399. The next prime is 20101643413. The reversal of 20101643412 is 21434610102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101643413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161712 + ... + 257592.

It is an arithmetic number, because the mean of its divisors is an integer number (1954458688).

Almost surely, 2^20101643412 is an apocalyptic number.

It is an amenable number.

20101643412 is an abundant number, since it is smaller than the sum of its proper divisors (26805365100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101643412 is a wasteful number, since it uses less digits than its factorization.

20101643412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113359 (or 113357 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 20101643412 in words is "twenty billion, one hundred one million, six hundred forty-three thousand, four hundred twelve".