42668534680 has 32 divisors (see below), whose sum is σ = 98598914640. Its totient is φ = 16606131840.

The previous prime is 42668534641. The next prime is 42668534683. The reversal of 42668534680 is 8643586624.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42668534683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14413566 + ... + 14416525.

Almost surely, 2^42668534680 is an apocalyptic number.

42668534680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42668534680 is an abundant number, since it is smaller than the sum of its proper divisors (55930379960).

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

42668534680 is a wasteful number, since it uses less digits than its factorization.

42668534680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28830139 (or 28830135 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 52.

The spelling of 42668534680 in words is "forty-two billion, six hundred sixty-eight million, five hundred thirty-four thousand, six hundred eighty".