20424140012 has 6 divisors (see below), whose sum is σ = 35742245028. Its totient is φ = 10212070004.

The previous prime is 20424139973. The next prime is 20424140021. The reversal of 20424140012 is 21004142402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553017498 + ... + 2553017505.

It is an arithmetic number, because the mean of its divisors is an integer number (5957040838).

Almost surely, 2^20424140012 is an apocalyptic number.

It is an amenable number.

20424140012 is a deficient number, since it is larger than the sum of its proper divisors (15318105016).

20424140012 is a wasteful number, since it uses less digits than its factorization.

20424140012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106035007 (or 5106035005 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20424140012 its reverse (21004142402), we get a palindrome (41428282414).

The spelling of 20424140012 in words is "twenty billion, four hundred twenty-four million, one hundred forty thousand, twelve".