20312501431152 has 160 divisors (see below), whose sum is σ = 61119967357440. Its totient is φ = 5692373406720.

The previous prime is 20312501431147. The next prime is 20312501431169. The reversal of 20312501431152 is 25113410521302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60183027 + ... + 60519597.

It is an arithmetic number, because the mean of its divisors is an integer number (381999795984).

Almost surely, 2^{20312501431152} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20312501431152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30559983678720).

20312501431152 is an abundant number, since it is smaller than the sum of its proper divisors (40807465926288).

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

20312501431152 is a wasteful number, since it uses less digits than its factorization.

20312501431152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340031 (or 340025 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 20312501431152 its reverse (25113410521302), we get a palindrome (45425911952454).

The spelling of 20312501431152 in words is "twenty trillion, three hundred twelve billion, five hundred one million, four hundred thirty-one thousand, one hundred fifty-two".