78631113530 has 8 divisors (see below), whose sum is σ = 141536004372. Its totient is φ = 31452445408.

The previous prime is 78631113499. The next prime is 78631113551. The reversal of 78631113530 is 3531113687.

It can be written as a sum of positive squares in 2 ways, for example, as 68256265081 + 10374848449 = 261259^2 + 101857^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3931555667 + ... + 3931555686.

Almost surely, 2^78631113530 is an apocalyptic number.

78631113530 is a deficient number, since it is larger than the sum of its proper divisors (62904890842).

78631113530 is a wasteful number, since it uses less digits than its factorization.

78631113530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863111360.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 78631113530 in words is "seventy-eight billion, six hundred thirty-one million, one hundred thirteen thousand, five hundred thirty".