20015423312 has 10 divisors (see below), whose sum is σ = 38779882698. Its totient is φ = 10007711648.

The previous prime is 20015423303. The next prime is 20015423339. The reversal of 20015423312 is 21332451002.

It can be written as a sum of positive squares in only one way, i.e., 15841746496 + 4173676816 = 125864^2 + 64604^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625481963 + ... + 625481994.

Almost surely, 2^20015423312 is an apocalyptic number.

It is an amenable number.

20015423312 is a deficient number, since it is larger than the sum of its proper divisors (18764459386).

20015423312 is a wasteful number, since it uses less digits than its factorization.

20015423312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250963965 (or 1250963959 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20015423312 its reverse (21332451002), we get a palindrome (41347874314).

The spelling of 20015423312 in words is "twenty billion, fifteen million, four hundred twenty-three thousand, three hundred twelve".