42165631197 has 24 divisors (see below), whose sum is σ = 61831231488. Its totient is φ = 27686268000.

The previous prime is 42165631121. The next prime is 42165631219. The reversal of 42165631197 is 79113656124.

42165631197 is a `hidden beast` number, since 4 + 2 + 1 + 6 + 5 + 631 + 1 + 9 + 7 = 666.

42165631197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42165631197 - 2⁷ = 42165631069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42165630197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52188 + ... + 295050.

It is an arithmetic number, because the mean of its divisors is an integer number (2576301312).

Almost surely, 2^42165631197 is an apocalyptic number.

It is an amenable number.

42165631197 is a deficient number, since it is larger than the sum of its proper divisors (19665600291).

42165631197 is a wasteful number, since it uses less digits than its factorization.

42165631197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243161 (or 243158 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 42165631197 in words is "forty-two billion, one hundred sixty-five million, six hundred thirty-one thousand, one hundred ninety-seven".