20783906101 has 24 divisors (see below), whose sum is σ = 24555381120. Its totient is φ = 17537450112.

The previous prime is 20783906057. The next prime is 20783906111. The reversal of 20783906101 is 10160938702.

It is not a de Polignac number, because 20783906101 - 2⁷ = 20783905973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20783906111) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 1335501 + ... + 1350973.

It is an arithmetic number, because the mean of its divisors is an integer number (1023140880).

Almost surely, 2^20783906101 is an apocalyptic number.

It is an amenable number.

20783906101 is a deficient number, since it is larger than the sum of its proper divisors (3771475019).

20783906101 is a wasteful number, since it uses less digits than its factorization.

20783906101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15913 (or 15906 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 20783906101 in words is "twenty billion, seven hundred eighty-three million, nine hundred six thousand, one hundred one".