20112315534 has 12 divisors (see below), whose sum is σ = 43576683696. Its totient is φ = 6704105172.

The previous prime is 20112315493. The next prime is 20112315547. The reversal of 20112315534 is 43551321102.

20112315534 is a `hidden beast` number, since 2 + 0 + 1 + 123 + 1 + 5 + 534 = 666.

It is a super-2 number, since 2×20112315534² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20112315498 and 20112315507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 558675414 + ... + 558675449.

It is an arithmetic number, because the mean of its divisors is an integer number (3631390308).

Almost surely, 2^20112315534 is an apocalyptic number.

20112315534 is an abundant number, since it is smaller than the sum of its proper divisors (23464368162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20112315534 is a wasteful number, since it uses less digits than its factorization.

20112315534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117350871 (or 1117350868 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 20112315534 its reverse (43551321102), we get a palindrome (63663636636).

The spelling of 20112315534 in words is "twenty billion, one hundred twelve million, three hundred fifteen thousand, five hundred thirty-four".