20647195194 has 8 divisors (see below), whose sum is σ = 41294390400. Its totient is φ = 6882398396.

The previous prime is 20647195193. The next prime is 20647195223. The reversal of 20647195194 is 49159174602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

20647195194 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20647195193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720599594 + ... + 1720599605.

It is an arithmetic number, because the mean of its divisors is an integer number (5161798800).

Almost surely, 2^20647195194 is an apocalyptic number.

20647195194 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20647195194 is a wasteful number, since it uses less digits than its factorization.

20647195194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441199204.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 20647195194 in words is "twenty billion, six hundred forty-seven million, one hundred ninety-five thousand, one hundred ninety-four".