20420024312 has 32 divisors (see below), whose sum is σ = 39960082080. Its totient is φ = 9764177280.

The previous prime is 20420024279. The next prime is 20420024321. The reversal of 20420024312 is 21342002402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1474862 + ... + 1488642.

It is an arithmetic number, because the mean of its divisors is an integer number (1248752565).

Almost surely, 2^20420024312 is an apocalyptic number.

It is an amenable number.

20420024312 is a deficient number, since it is larger than the sum of its proper divisors (19540057768).

20420024312 is a wasteful number, since it uses less digits than its factorization.

20420024312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21863 (or 21859 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20420024312 its reverse (21342002402), we get a palindrome (41762026714).

The spelling of 20420024312 in words is "twenty billion, four hundred twenty million, twenty-four thousand, three hundred twelve".