42640068604 has 48 divisors (see below), whose sum is σ = 88106561536. Its totient is φ = 17669664000.

The previous prime is 42640068599. The next prime is 42640068671. The reversal of 42640068604 is 40686004624.

It is a congruent number.

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, 1022017 + ... + 1062919.

Almost surely, 2^42640068604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42640068604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44053280768).

42640068604 is an abundant number, since it is smaller than the sum of its proper divisors (45466492932).

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

42640068604 is a wasteful number, since it uses less digits than its factorization.

42640068604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42146 (or 42144 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 42640068604 in words is "forty-two billion, six hundred forty million, sixty-eight thousand, six hundred four".