20140447378 has 4 divisors (see below), whose sum is σ = 30210671070. Its totient is φ = 10070223688.

The previous prime is 20140447367. The next prime is 20140447399. The reversal of 20140447378 is 87374404102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87374404102 = 2 ⋅43687202051.

It can be written as a sum of positive squares in only one way, i.e., 17685542169 + 2454905209 = 132987^2 + 49547^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 20140447378.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5035111843 + ... + 5035111846.

Almost surely, 2^20140447378 is an apocalyptic number.

20140447378 is a deficient number, since it is larger than the sum of its proper divisors (10070223692).

20140447378 is a wasteful number, since it uses less digits than its factorization.

20140447378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10070223691.

The product of its (nonzero) digits is 150528, while the sum is 40.

The spelling of 20140447378 in words is "twenty billion, one hundred forty million, four hundred forty-seven thousand, three hundred seventy-eight".