20020013993 has 96 divisors (see below), whose sum is σ = 26569482240. Its totient is φ = 14715613440.

The previous prime is 20020013987. The next prime is 20020014023. The reversal of 20020013993 is 39931002002.

It is not a de Polignac number, because 20020013993 - 2⁶ = 20020013929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020013933) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 146131421 + ... + 146131557.

It is an arithmetic number, because the mean of its divisors is an integer number (276765440).

Almost surely, 2^20020013993 is an apocalyptic number.

20020013993 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20020013993 is a deficient number, since it is larger than the sum of its proper divisors (6549468247).

20020013993 is a wasteful number, since it uses less digits than its factorization.

20020013993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

Adding to 20020013993 its reverse (39931002002), we get a palindrome (59951015995).

The spelling of 20020013993 in words is "twenty billion, twenty million, thirteen thousand, nine hundred ninety-three".