83591861455389 has 32 divisors (see below), whose sum is σ = 128415513051136. Its totient is φ = 47377940480640.

The previous prime is 83591861455331. The next prime is 83591861455439. The reversal of 83591861455389 is 98355416819538.

It is not a de Polignac number, because 83591861455389 - 2⁷ = 83591861455261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83591861455389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83591861459389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5735049 + ... + 14144769.

It is an arithmetic number, because the mean of its divisors is an integer number (4012984782848).

Almost surely, 2^{83591861455389} is an apocalyptic number.

It is an amenable number.

83591861455389 is a deficient number, since it is larger than the sum of its proper divisors (44823651595747).

83591861455389 is a wasteful number, since it uses less digits than its factorization.

83591861455389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413585.

The product of its digits is 1119744000, while the sum is 75.

The spelling of 83591861455389 in words is "eighty-three trillion, five hundred ninety-one billion, eight hundred sixty-one million, four hundred fifty-five thousand, three hundred eighty-nine".