83085404286840 has 128 divisors (see below), whose sum is σ = 249909039797760. Its totient is φ = 22098154627584.

The previous prime is 83085404286809. The next prime is 83085404286847. The reversal of 83085404286840 is 4868240458038.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83085404286847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69576882 + ... + 70760958.

It is an arithmetic number, because the mean of its divisors is an integer number (1952414373420).

Almost surely, 2^{83085404286840} is an apocalyptic number.

It is an amenable number.

83085404286840 is an abundant number, since it is smaller than the sum of its proper divisors (166823635510920).

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

83085404286840 is a wasteful number, since it uses less digits than its factorization.

83085404286840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185621 (or 1185617 counting only the distinct ones).

The product of its (nonzero) digits is 47185920, while the sum is 60.

The spelling of 83085404286840 in words is "eighty-three trillion, eighty-five billion, four hundred four million, two hundred eighty-six thousand, eight hundred forty".