20143344408 has 32 divisors (see below), whose sum is σ = 54936394560. Its totient is φ = 6104043680.

The previous prime is 20143344371. The next prime is 20143344493. The reversal of 20143344408 is 80444334102.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38150010 + ... + 38150537.

It is an arithmetic number, because the mean of its divisors is an integer number (1716762330).

Almost surely, 2^20143344408 is an apocalyptic number.

It is an amenable number.

20143344408 is an abundant number, since it is smaller than the sum of its proper divisors (34793050152).

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

20143344408 is a wasteful number, since it uses less digits than its factorization.

20143344408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76300567 (or 76300563 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The spelling of 20143344408 in words is "twenty billion, one hundred forty-three million, three hundred forty-four thousand, four hundred eight".