42523637646 has 16 divisors (see below), whose sum is σ = 97196886144. Its totient is φ = 12149610744.

The previous prime is 42523637623. The next prime is 42523637671. The reversal of 42523637646 is 64673632524.

It is a junction number, because it is equal to n+sod(n) for n = 42523637595 and 42523637604.

It is a congruent 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, 506233740 + ... + 506233823.

It is an arithmetic number, because the mean of its divisors is an integer number (6074805384).

Almost surely, 2^42523637646 is an apocalyptic number.

42523637646 is an abundant number, since it is smaller than the sum of its proper divisors (54673248498).

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

42523637646 is a wasteful number, since it uses less digits than its factorization.

42523637646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012467575.

The product of its digits is 4354560, while the sum is 48.

The spelling of 42523637646 in words is "forty-two billion, five hundred twenty-three million, six hundred thirty-seven thousand, six hundred forty-six".