9909626977936 has 75 divisors (see below), whose sum is σ = 22399947889673. Its totient is φ = 4246718562240.

The previous prime is 9909626977909. The next prime is 9909626977967. The reversal of 9909626977936 is 6397796269099.

The square root of 9909626977936 is 3147956.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 99701851536 + 9809925126400 = 315756^2 + 3132080^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9909626977936.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 616991346 + ... + 617007406.

Almost surely, 2^{9909626977936} is an apocalyptic number.

9909626977936 is the 3147956-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9909626977936

9909626977936 is an abundant number, since it is smaller than the sum of its proper divisors (12490320911737).

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

9909626977936 is an frugal number, since it uses more digits than its factorization.

9909626977936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32158 (or 16070 counting only the distinct ones).

The product of its (nonzero) digits is 3749847696, while the sum is 82.

The spelling of 9909626977936 in words is "nine trillion, nine hundred nine billion, six hundred twenty-six million, nine hundred seventy-seven thousand, nine hundred thirty-six".