20415646341031 has 2 divisors, whose sum is σ = 20415646341032. Its totient is φ = 20415646341030.

The previous prime is 20415646341011. The next prime is 20415646341043. The reversal of 20415646341031 is 13014364651402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20415646341031 is a prime.

It is a super-2 number, since 2×20415646341031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20415646341011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10207823170515 + 10207823170516.

It is an arithmetic number, because the mean of its divisors is an integer number (10207823170516).

Almost surely, 2^{20415646341031} is an apocalyptic number.

20415646341031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20415646341031 is an equidigital number, since it uses as much as digits as its factorization.

20415646341031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 20415646341031 in words is "twenty trillion, four hundred fifteen billion, six hundred forty-six million, three hundred forty-one thousand, thirty-one".