97421664194 has 4 divisors (see below), whose sum is σ = 146132496294. Its totient is φ = 48710832096.

The previous prime is 97421664181. The next prime is 97421664203. The reversal of 97421664194 is 49146612479.

97421664194 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 84841125625 + 12580538569 = 291275^2 + 112163^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24355416047 + ... + 24355416050.

Almost surely, 2^97421664194 is an apocalyptic number.

97421664194 is a deficient number, since it is larger than the sum of its proper divisors (48710832100).

97421664194 is a wasteful number, since it uses less digits than its factorization.

97421664194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48710832099.

The product of its digits is 2612736, while the sum is 53.

The spelling of 97421664194 in words is "ninety-seven billion, four hundred twenty-one million, six hundred sixty-four thousand, one hundred ninety-four".