20112052506 has 64 divisors (see below), whose sum is σ = 50714125056. Its totient is φ = 5174899200.

The previous prime is 20112052451. The next prime is 20112052507. The reversal of 20112052506 is 60525021102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20112052507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426825 + ... + 471596.

It is an arithmetic number, because the mean of its divisors is an integer number (792408204).

Almost surely, 2^20112052506 is an apocalyptic number.

20112052506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20112052506 is an abundant number, since it is smaller than the sum of its proper divisors (30602072550).

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

20112052506 is a wasteful number, since it uses less digits than its factorization.

20112052506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898487.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20112052506 its reverse (60525021102), we get a palindrome (80637073608).

The spelling of 20112052506 in words is "twenty billion, one hundred twelve million, fifty-two thousand, five hundred six".