20641819683 has 32 divisors (see below), whose sum is σ = 28868382720. Its totient is φ = 13094658720.

The previous prime is 20641819633. The next prime is 20641819699. The reversal of 20641819683 is 38691814602.

It is not a de Polignac number, because 20641819683 - 2²⁹ = 20104948771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20641819603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16877410 + ... + 16878632.

It is an arithmetic number, because the mean of its divisors is an integer number (902136960).

Almost surely, 2^20641819683 is an apocalyptic number.

20641819683 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20641819683 is a deficient number, since it is larger than the sum of its proper divisors (8226563037).

20641819683 is a wasteful number, since it uses less digits than its factorization.

20641819683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319.

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 20641819683 in words is "twenty billion, six hundred forty-one million, eight hundred nineteen thousand, six hundred eighty-three".