83840442840 has 192 divisors, whose sum is σ = 339717231360. Its totient is φ = 17421384960.

The previous prime is 83840442827. The next prime is 83840442857. The reversal of 83840442840 is 4824404838.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1484554 + ... + 1539993.

It is an arithmetic number, because the mean of its divisors is an integer number (1769360580).

Almost surely, 2^83840442840 is an apocalyptic number.

It is an amenable number.

83840442840 is an abundant number, since it is smaller than the sum of its proper divisors (255876788520).

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

83840442840 is a wasteful number, since it uses less digits than its factorization.

83840442840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024582 (or 3024575 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 45.

The spelling of 83840442840 in words is "eighty-three billion, eight hundred forty million, four hundred forty-two thousand, eight hundred forty".