9949887081872 has 40 divisors (see below), whose sum is σ = 19494042247872. Its totient is φ = 4919338396800.

The previous prime is 9949887081793. The next prime is 9949887081899. The reversal of 9949887081872 is 2781807889499.

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 7 ways as a sum of consecutive naturals, for example, 4445204 + ... + 6297587.

Almost surely, 2^{9949887081872} is an apocalyptic number.

It is an amenable number.

9949887081872 is a deficient number, since it is larger than the sum of its proper divisors (9544155166000).

9949887081872 is a wasteful number, since it uses less digits than its factorization.

9949887081872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10743447 (or 10743441 counting only the distinct ones).

The product of its (nonzero) digits is 1170505728, while the sum is 80.

The spelling of 9949887081872 in words is "nine trillion, nine hundred forty-nine billion, eight hundred eighty-seven million, eighty-one thousand, eight hundred seventy-two".