20196072544474 has 16 divisors (see below), whose sum is σ = 32076400804200. Its totient is φ = 9503949520384.

The previous prime is 20196072544451. The next prime is 20196072544477. The reversal of 20196072544474 is 47444527069102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19711886197249 + 484186347225 = 4439807^2 + 695835^2 .

It is not an unprimeable number, because it can be changed into a prime (20196072544477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316592 + ... + 6490420.

Almost surely, 2^{20196072544474} is an apocalyptic number.

20196072544474 is a deficient number, since it is larger than the sum of its proper divisors (11880328259726).

20196072544474 is a wasteful number, since it uses less digits than its factorization.

20196072544474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5288657.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 20196072544474 in words is "twenty trillion, one hundred ninety-six billion, seventy-two million, five hundred forty-four thousand, four hundred seventy-four".