42818132646 has 24 divisors (see below), whose sum is σ = 93815013240. Its totient is φ = 14112342816.

The previous prime is 42818132639. The next prime is 42818132681. The reversal of 42818132646 is 64623181824.

42818132646 is a `hidden beast` number, since 4 + 281 + 8 + 1 + 326 + 46 = 666.

42818132646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42818132646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13362360 + ... + 13365563.

It is an arithmetic number, because the mean of its divisors is an integer number (3908958885).

Almost surely, 2^42818132646 is an apocalyptic number.

42818132646 is an abundant number, since it is smaller than the sum of its proper divisors (50996880594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42818132646 is a wasteful number, since it uses less digits than its factorization.

42818132646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26728020 (or 26728017 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The spelling of 42818132646 in words is "forty-two billion, eight hundred eighteen million, one hundred thirty-two thousand, six hundred forty-six".