42656839356620 has 48 divisors (see below), whose sum is σ = 92472702271488. Its totient is φ = 16511667276480.

The previous prime is 42656839356613. The next prime is 42656839356631. The reversal of 42656839356620 is 2665393865624.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14355257 + ... + 17070063.

It is an arithmetic number, because the mean of its divisors is an integer number (1926514630656).

Almost surely, 2^{42656839356620} is an apocalyptic number.

It is an amenable number.

42656839356620 is an abundant number, since it is smaller than the sum of its proper divisors (49815862914868).

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

42656839356620 is a wasteful number, since it uses less digits than its factorization.

42656839356620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740190 (or 2740188 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 65.

The spelling of 42656839356620 in words is "forty-two trillion, six hundred fifty-six billion, eight hundred thirty-nine million, three hundred fifty-six thousand, six hundred twenty".