20346503065631 has 2 divisors, whose sum is σ = 20346503065632. Its totient is φ = 20346503065630.

The previous prime is 20346503065591. The next prime is 20346503065649. The reversal of 20346503065631 is 13656030564302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20346503065631 - 2²² = 20346498871327 is a prime.

It is a super-2 number, since 2×20346503065631² (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 (20346503065831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173251532815 + 10173251532816.

It is an arithmetic number, because the mean of its divisors is an integer number (10173251532816).

Almost surely, 2^{20346503065631} is an apocalyptic number.

20346503065631 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346503065631 is an equidigital number, since it uses as much as digits as its factorization.

20346503065631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 20346503065631 in words is "twenty trillion, three hundred forty-six billion, five hundred three million, sixty-five thousand, six hundred thirty-one".