20101001983 has 2 divisors, whose sum is σ = 20101001984. Its totient is φ = 20101001982.

The previous prime is 20101001957. The next prime is 20101002023. The reversal of 20101001983 is 38910010102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101001983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101001903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050500991 + 10050500992.

It is an arithmetic number, because the mean of its divisors is an integer number (10050500992).

Almost surely, 2^20101001983 is an apocalyptic number.

20101001983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101001983 is an equidigital number, since it uses as much as digits as its factorization.

20101001983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

It can be divided in two parts, 201010019 and 83, that added together give a palindrome (201010102).

The spelling of 20101001983 in words is "twenty billion, one hundred one million, one thousand, nine hundred eighty-three".