9951632648 has 32 divisors (see below), whose sum is σ = 19280401920. Its totient is φ = 4810512000.

The previous prime is 9951632623. The next prime is 9951632651. The reversal of 9951632648 is 8462361599.

It is a self number, because there is not a number n which added to its sum of digits gives 9951632648.

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, 236228 + ... + 275148.

It is an arithmetic number, because the mean of its divisors is an integer number (602512560).

Almost surely, 2^9951632648 is an apocalyptic number.

It is an amenable number.

9951632648 is a deficient number, since it is larger than the sum of its proper divisors (9328769272).

9951632648 is a wasteful number, since it uses less digits than its factorization.

9951632648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39989 (or 39985 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 53.

The square root of 9951632648 is about 99757.8701055711. The cubic root of 9951632648 is about 2150.9555981392.

The spelling of 9951632648 in words is "nine billion, nine hundred fifty-one million, six hundred thirty-two thousand, six hundred forty-eight".