83742645720 has 64 divisors (see below), whose sum is σ = 251252195040. Its totient is φ = 22329216000.

The previous prime is 83742645719. The next prime is 83742645827. The reversal of 83742645720 is 2754624738.

It is a self number, because there is not a number n which added to its sum of digits gives 83742645720.

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, 1506420 + ... + 1561020.

Almost surely, 2^83742645720 is an apocalyptic number.

It is an amenable number.

83742645720 is an abundant number, since it is smaller than the sum of its proper divisors (167509549320).

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

83742645720 is a wasteful number, since it uses less digits than its factorization.

83742645720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67396 (or 67392 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 83742645720 in words is "eighty-three billion, seven hundred forty-two million, six hundred forty-five thousand, seven hundred twenty".