20467904293 has 2 divisors, whose sum is σ = 20467904294. Its totient is φ = 20467904292.

The previous prime is 20467904209. The next prime is 20467904297. The reversal of 20467904293 is 39240976402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13743576289 + 6724328004 = 117233^2 + 82002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20467904293 is a prime.

It is a super-2 number, since 2×20467904293² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20467904297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233952146 + 10233952147.

It is an arithmetic number, because the mean of its divisors is an integer number (10233952147).

Almost surely, 2^20467904293 is an apocalyptic number.

It is an amenable number.

20467904293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20467904293 is an equidigital number, since it uses as much as digits as its factorization.

20467904293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 20467904293 in words is "twenty billion, four hundred sixty-seven million, nine hundred four thousand, two hundred ninety-three".