77071083078 has 64 divisors (see below), whose sum is σ = 170317873152. Its totient is φ = 23054942880.

The previous prime is 77071083071. The next prime is 77071083083. The reversal of 77071083078 is 87038017077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77071083071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7790251 + ... + 7800137.

It is an arithmetic number, because the mean of its divisors is an integer number (2661216768).

Almost surely, 2^77071083078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77071083078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85158936576).

77071083078 is an abundant number, since it is smaller than the sum of its proper divisors (93246790074).

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

77071083078 is a wasteful number, since it uses less digits than its factorization.

77071083078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11409.

The product of its (nonzero) digits is 460992, while the sum is 48.

The spelling of 77071083078 in words is "seventy-seven billion, seventy-one million, eighty-three thousand, seventy-eight".