78526507020 has 96 divisors (see below), whose sum is σ = 236909207808. Its totient is φ = 19319676672.

The previous prime is 78526507009. The next prime is 78526507021. The reversal of 78526507020 is 2070562587.

It is not an unprimeable number, because it can be changed into a prime (78526507021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1556227 + ... + 1605893.

It is an arithmetic number, because the mean of its divisors is an integer number (2467804248).

Almost surely, 2^78526507020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78526507020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118454603904).

78526507020 is an abundant number, since it is smaller than the sum of its proper divisors (158382700788).

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

78526507020 is a wasteful number, since it uses less digits than its factorization.

78526507020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51719 (or 51717 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 78526507020 in words is "seventy-eight billion, five hundred twenty-six million, five hundred seven thousand, twenty".