9678939236590 has 64 divisors (see below), whose sum is σ = 19178528314176. Its totient is φ = 3494910661632.

The previous prime is 9678939236563. The next prime is 9678939236639. The reversal of 9678939236590 is 956329398769.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172687 + ... + 4403146.

It is an arithmetic number, because the mean of its divisors is an integer number (299664504909).

Almost surely, 2^{9678939236590} is an apocalyptic number.

9678939236590 is a deficient number, since it is larger than the sum of its proper divisors (9499589077586).

9678939236590 is a wasteful number, since it uses less digits than its factorization.

9678939236590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576213.

The product of its (nonzero) digits is 1190427840, while the sum is 76.

The spelling of 9678939236590 in words is "nine trillion, six hundred seventy-eight billion, nine hundred thirty-nine million, two hundred thirty-six thousand, five hundred ninety".