20144701632 has 112 divisors (see below), whose sum is σ = 58964315904. Its totient is φ = 6018432000.

The previous prime is 20144701627. The next prime is 20144701637. The reversal of 20144701632 is 23610744102.

It is an interprime number because it is at equal distance from previous prime (20144701627) and next prime (20144701637).

It is a self number, because there is not a number n which added to its sum of digits gives 20144701632.

It is not an unprimeable number, because it can be changed into a prime (20144701637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82782 + ... + 217122.

Almost surely, 2^20144701632 is an apocalyptic number.

20144701632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20144701632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29482157952).

20144701632 is an abundant number, since it is smaller than the sum of its proper divisors (38819614272).

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

20144701632 is a wasteful number, since it uses less digits than its factorization.

20144701632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134438 (or 134428 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

It can be divided in two parts, 2014470 and 1632, that added together give a palindrome (2016102).

The spelling of 20144701632 in words is "twenty billion, one hundred forty-four million, seven hundred one thousand, six hundred thirty-two".