42447718097 has 4 divisors (see below), whose sum is σ = 42449861220. Its totient is φ = 42445574976.

The previous prime is 42447717971. The next prime is 42447718111. The reversal of 42447718097 is 79081774424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24266162176 + 18181555921 = 155776^2 + 134839^2 .

It is a cyclic number.

It is not a de Polignac number, because 42447718097 - 2¹⁴ = 42447701713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42447718297) 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, 1041572 + ... + 1081557.

It is an arithmetic number, because the mean of its divisors is an integer number (10612465305).

Almost surely, 2^42447718097 is an apocalyptic number.

It is an amenable number.

42447718097 is a deficient number, since it is larger than the sum of its proper divisors (2143123).

42447718097 is a wasteful number, since it uses less digits than its factorization.

42447718097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143122.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 42447718097 in words is "forty-two billion, four hundred forty-seven million, seven hundred eighteen thousand, ninety-seven".