20024206331477 has 2 divisors, whose sum is σ = 20024206331478. Its totient is φ = 20024206331476.

The previous prime is 20024206331401. The next prime is 20024206331491. The reversal of 20024206331477 is 77413360242002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11534622742756 + 8489583588721 = 3396266^2 + 2913689^2 .

It is a cyclic number.

It is not a de Polignac number, because 20024206331477 - 2⁴⁰ = 18924694703701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20024206331977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012103165738 + 10012103165739.

It is an arithmetic number, because the mean of its divisors is an integer number (10012103165739).

Almost surely, 2^{20024206331477} is an apocalyptic number.

It is an amenable number.

20024206331477 is a deficient number, since it is larger than the sum of its proper divisors (1).

20024206331477 is an equidigital number, since it uses as much as digits as its factorization.

20024206331477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 41.

Adding to 20024206331477 its reverse (77413360242002), we get a palindrome (97437566573479).

The spelling of 20024206331477 in words is "twenty trillion, twenty-four billion, two hundred six million, three hundred thirty-one thousand, four hundred seventy-seven".