20501113315234 has 32 divisors (see below), whose sum is σ = 31658479001856. Its totient is φ = 9952519674240.

The previous prime is 20501113315231. The next prime is 20501113315283. The reversal of 20501113315234 is 43251331110502.

It is a junction number, because it is equal to n+sod(n) for n = 20501113315196 and 20501113315205.

It is not an unprimeable number, because it can be changed into a prime (20501113315231) 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, 9662919 + ... + 11591989.

It is an arithmetic number, because the mean of its divisors is an integer number (989327468808).

Almost surely, 2^{20501113315234} is an apocalyptic number.

20501113315234 is a deficient number, since it is larger than the sum of its proper divisors (11157365686622).

20501113315234 is a wasteful number, since it uses less digits than its factorization.

20501113315234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930170.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 20501113315234 its reverse (43251331110502), we get a palindrome (63752444425736).

The spelling of 20501113315234 in words is "twenty trillion, five hundred one billion, one hundred thirteen million, three hundred fifteen thousand, two hundred thirty-four".