42646404266 has 16 divisors (see below), whose sum is σ = 64373374464. Its totient is φ = 21188659104.

The previous prime is 42646404197. The next prime is 42646404319. The reversal of 42646404266 is 66240464624.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3352430 + ... + 3365126.

It is an arithmetic number, because the mean of its divisors is an integer number (4023335904).

Almost surely, 2^42646404266 is an apocalyptic number.

42646404266 is a deficient number, since it is larger than the sum of its proper divisors (21726970198).

42646404266 is a wasteful number, since it uses less digits than its factorization.

42646404266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23165.

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 42646404266 in words is "forty-two billion, six hundred forty-six million, four hundred four thousand, two hundred sixty-six".