20385384274 has 4 divisors (see below), whose sum is σ = 30578076414. Its totient is φ = 10192692136.

The previous prime is 20385384263. The next prime is 20385384287. The reversal of 20385384274 is 47248358302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13111853049 + 7273531225 = 114507^2 + 85285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5096346067 + ... + 5096346070.

Almost surely, 2^20385384274 is an apocalyptic number.

20385384274 is a deficient number, since it is larger than the sum of its proper divisors (10192692140).

20385384274 is a wasteful number, since it uses less digits than its factorization.

20385384274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10192692139.

The product of its (nonzero) digits is 1290240, while the sum is 46.

The spelling of 20385384274 in words is "twenty billion, three hundred eighty-five million, three hundred eighty-four thousand, two hundred seventy-four".