20415650244231 has 16 divisors (see below), whose sum is σ = 29819740193280. Its totient is φ = 12321350973120.

The previous prime is 20415650244211. The next prime is 20415650244257. The reversal of 20415650244231 is 13244205651402.

It is a de Polignac number, because none of the positive numbers 2^k-20415650244231 is a prime.

It is a super-2 number, since 2×20415650244231² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20415650244231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20415650244211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294251670 + ... + 1294267443.

It is an arithmetic number, because the mean of its divisors is an integer number (1863733762080).

Almost surely, 2^{20415650244231} is an apocalyptic number.

20415650244231 is a deficient number, since it is larger than the sum of its proper divisors (9404089949049).

20415650244231 is a wasteful number, since it uses less digits than its factorization.

20415650244231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588519366.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 20415650244231 its reverse (13244205651402), we get a palindrome (33659855895633).

The spelling of 20415650244231 in words is "twenty trillion, four hundred fifteen billion, six hundred fifty million, two hundred forty-four thousand, two hundred thirty-one".