83786070078 has 96 divisors (see below), whose sum is σ = 193102509600. Its totient is φ = 26180921088.

The previous prime is 83786070047. The next prime is 83786070079. The reversal of 83786070078 is 87007068738.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83786070079) by changing a digit.

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, 51181876 + ... + 51183512.

It is an arithmetic number, because the mean of its divisors is an integer number (2011484475).

Almost surely, 2^83786070078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83786070078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96551254800).

83786070078 is an abundant number, since it is smaller than the sum of its proper divisors (109316439522).

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

83786070078 is a wasteful number, since it uses less digits than its factorization.

83786070078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146 (or 3143 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 83786070078 in words is "eighty-three billion, seven hundred eighty-six million, seventy thousand, seventy-eight".