20123247624 has 64 divisors (see below), whose sum is σ = 53038540800. Its totient is φ = 6344794944.

The previous prime is 20123247623. The next prime is 20123247647. The reversal of 20123247624 is 42674232102.

It is not an unprimeable number, because it can be changed into a prime (20123247623) 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, 260929 + ... + 329135.

It is an arithmetic number, because the mean of its divisors is an integer number (828727200).

Almost surely, 2^20123247624 is an apocalyptic number.

20123247624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123247624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26519270400).

20123247624 is an abundant number, since it is smaller than the sum of its proper divisors (32915293176).

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

20123247624 is a wasteful number, since it uses less digits than its factorization.

20123247624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68882 (or 68878 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

Adding to 20123247624 its reverse (42674232102), we get a palindrome (62797479726).

The spelling of 20123247624 in words is "twenty billion, one hundred twenty-three million, two hundred forty-seven thousand, six hundred twenty-four".