20008112542 has 48 divisors (see below), whose sum is σ = 33768959616. Its totient is φ = 8881888400.

The previous prime is 20008112503. The next prime is 20008112543. The reversal of 20008112542 is 24521180002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20008112543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1833033 + ... + 1843915.

It is an arithmetic number, because the mean of its divisors is an integer number (703519992).

Almost surely, 2^20008112542 is an apocalyptic number.

20008112542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20008112542 is a deficient number, since it is larger than the sum of its proper divisors (13760847074).

20008112542 is a wasteful number, since it uses less digits than its factorization.

20008112542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11085 (or 11074 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 20008112542 its reverse (24521180002), we get a palindrome (44529292544).

The spelling of 20008112542 in words is "twenty billion, eight million, one hundred twelve thousand, five hundred forty-two".