20144881075 has 48 divisors (see below), whose sum is σ = 27685790496. Its totient is φ = 14417740800.

The previous prime is 20144881073. The next prime is 20144881079. The reversal of 20144881075 is 57018844102.

It is not a de Polignac number, because 20144881075 - 2¹ = 20144881073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144881073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12305157 + ... + 12306793.

It is an arithmetic number, because the mean of its divisors is an integer number (576787302).

Almost surely, 2^20144881075 is an apocalyptic number.

20144881075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20144881075 is a deficient number, since it is larger than the sum of its proper divisors (7540909421).

20144881075 is a wasteful number, since it uses less digits than its factorization.

20144881075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344 (or 2339 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 20144881075 in words is "twenty billion, one hundred forty-four million, eight hundred eighty-one thousand, seventy-five".