20015244748032 has 144 divisors (see below), whose sum is σ = 53805111360000. Its totient is φ = 6604739721216.

The previous prime is 20015244748019. The next prime is 20015244748067. The reversal of 20015244748032 is 23084744251002.

It is a happy number.

It is a super-2 number, since 2×20015244748032² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242570719 + ... + 242653217.

Almost surely, 2^{20015244748032} 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 20015244748032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26902555680000).

20015244748032 is an abundant number, since it is smaller than the sum of its proper divisors (33789866611968).

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

20015244748032 is a wasteful number, since it uses less digits than its factorization.

20015244748032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85688 (or 85674 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

Adding to 20015244748032 its reverse (23084744251002), we get a palindrome (43099988999034).

The spelling of 20015244748032 in words is "twenty trillion, fifteen billion, two hundred forty-four million, seven hundred forty-eight thousand, thirty-two".