70638086500 has 48 divisors (see below), whose sum is σ = 154421794800. Its totient is φ = 28228089600.

The previous prime is 70638086377. The next prime is 70638086569. The reversal of 70638086500 is 568083607.

It can be written as a sum of positive squares in 8 ways, for example, as 1704533796 + 68933552704 = 41286^2 + 262552^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 457162 + ... + 591838.

It is an arithmetic number, because the mean of its divisors is an integer number (3217120725).

Almost surely, 2^70638086500 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 70638086500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77210897400).

70638086500 is an abundant number, since it is smaller than the sum of its proper divisors (83783708300).

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

70638086500 is a wasteful number, since it uses less digits than its factorization.

70638086500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135745 (or 135733 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 70638086500 in words is "seventy billion, six hundred thirty-eight million, eighty-six thousand, five hundred".