42218320197 has 16 divisors (see below), whose sum is σ = 60326064000. Its totient is φ = 26194208832.

The previous prime is 42218320181. The next prime is 42218320211. The reversal of 42218320197 is 79102381224.

It is not a de Polignac number, because 42218320197 - 2⁴ = 42218320181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42218320997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8265822 + ... + 8270927.

It is an arithmetic number, because the mean of its divisors is an integer number (3770379000).

Almost surely, 2^42218320197 is an apocalyptic number.

It is an amenable number.

42218320197 is a deficient number, since it is larger than the sum of its proper divisors (18107743803).

42218320197 is a wasteful number, since it uses less digits than its factorization.

42218320197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16536812.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 42218320197 in words is "forty-two billion, two hundred eighteen million, three hundred twenty thousand, one hundred ninety-seven".