20178344372 has 12 divisors (see below), whose sum is σ = 36063424320. Its totient is φ = 9874508856.

The previous prime is 20178344371. The next prime is 20178344377. The reversal of 20178344372 is 27344387102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20178344371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53665622 + ... + 53665997.

It is an arithmetic number, because the mean of its divisors is an integer number (3005285360).

Almost surely, 2^20178344372 is an apocalyptic number.

It is an amenable number.

20178344372 is a deficient number, since it is larger than the sum of its proper divisors (15885079948).

20178344372 is a wasteful number, since it uses less digits than its factorization.

20178344372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107331670 (or 107331668 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 20178344372 in words is "twenty billion, one hundred seventy-eight million, three hundred forty-four thousand, three hundred seventy-two".