84108776238685 has 8 divisors (see below), whose sum is σ = 110106034348896. Its totient is φ = 61170019082640.

The previous prime is 84108776238659. The next prime is 84108776238689. The reversal of 84108776238685 is 58683267780148.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-84108776238685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84108776238689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764625238479 + ... + 764625238588.

It is an arithmetic number, because the mean of its divisors is an integer number (13763254293612).

Almost surely, 2^{84108776238685} is an apocalyptic number.

It is an amenable number.

84108776238685 is a deficient number, since it is larger than the sum of its proper divisors (25997258110211).

84108776238685 is a wasteful number, since it uses less digits than its factorization.

84108776238685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529250477083.

The product of its (nonzero) digits is 867041280, while the sum is 73.

The spelling of 84108776238685 in words is "eighty-four trillion, one hundred eight billion, seven hundred seventy-six million, two hundred thirty-eight thousand, six hundred eighty-five".