20932013009 has 2 divisors, whose sum is σ = 20932013010. Its totient is φ = 20932013008.

The previous prime is 20932012987. The next prime is 20932013017. The reversal of 20932013009 is 90031023902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19350201025 + 1581811984 = 139105^2 + 39772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20932013009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20932013059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10466006504 + 10466006505.

It is an arithmetic number, because the mean of its divisors is an integer number (10466006505).

Almost surely, 2^20932013009 is an apocalyptic number.

It is an amenable number.

20932013009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20932013009 is an equidigital number, since it uses as much as digits as its factorization.

20932013009 is an evil number, because the sum of its binary digits is even.

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

It can be divided in two parts, 2093 and 2013009, that added together give a palindrome (2015102).

The spelling of 20932013009 in words is "twenty billion, nine hundred thirty-two million, thirteen thousand, nine".