20012011983 has 32 divisors (see below), whose sum is σ = 30303083520. Its totient is φ = 13046762880.

The previous prime is 20012011967. The next prime is 20012011997. The reversal of 20012011983 is 38911021002.

It is not a de Polignac number, because 20012011983 - 2⁴ = 20012011967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012011483) 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, 1721316 + ... + 1732902.

It is an arithmetic number, because the mean of its divisors is an integer number (946971360).

Almost surely, 2^20012011983 is an apocalyptic number.

20012011983 is a deficient number, since it is larger than the sum of its proper divisors (10291071537).

20012011983 is a wasteful number, since it uses less digits than its factorization.

20012011983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13004 (or 12998 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 20012011983 its reverse (38911021002), we get a palindrome (58923032985).

The spelling of 20012011983 in words is "twenty billion, twelve million, eleven thousand, nine hundred eighty-three".