991964295626 has 16 divisors (see below), whose sum is σ = 1540851917568. Its totient is φ = 478449223200.

The previous prime is 991964295613. The next prime is 991964295649. The reversal of 991964295626 is 626592469199.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25538780 + ... + 25577591.

It is an arithmetic number, because the mean of its divisors is an integer number (96303244848).

Almost surely, 2^991964295626 is an apocalyptic number.

991964295626 is a deficient number, since it is larger than the sum of its proper divisors (548887621942).

991964295626 is a wasteful number, since it uses less digits than its factorization.

991964295626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51116717.

The product of its digits is 113374080, while the sum is 68.

The spelling of 991964295626 in words is "nine hundred ninety-one billion, nine hundred sixty-four million, two hundred ninety-five thousand, six hundred twenty-six".