20144195876 has 48 divisors (see below), whose sum is σ = 41742570240. Its totient is φ = 8322545280.

The previous prime is 20144195857. The next prime is 20144195881. The reversal of 20144195876 is 67859144102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20144195876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511241 + ... + 549231.

It is an arithmetic number, because the mean of its divisors is an integer number (869636880).

Almost surely, 2^20144195876 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 20144195876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20871285120).

20144195876 is an abundant number, since it is smaller than the sum of its proper divisors (21598374364).

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

20144195876 is a wasteful number, since it uses less digits than its factorization.

20144195876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38684 (or 38682 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 20144195876 in words is "twenty billion, one hundred forty-four million, one hundred ninety-five thousand, eight hundred seventy-six".