42718216640 has 112 divisors (see below), whose sum is σ = 112069924704. Its totient is φ = 15379968000.

The previous prime is 42718216621. The next prime is 42718216649. The reversal of 42718216640 is 4661281724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42718216649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295442 + ... + 415598.

Almost surely, 2^42718216640 is an apocalyptic number.

42718216640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42718216640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56034962352).

42718216640 is an abundant number, since it is smaller than the sum of its proper divisors (69351708064).

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

42718216640 is a wasteful number, since it uses less digits than its factorization.

42718216640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120286 (or 120276 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 42718216640 in words is "forty-two billion, seven hundred eighteen million, two hundred sixteen thousand, six hundred forty".