9990655501501 has 8 divisors (see below), whose sum is σ = 10046694694400. Its totient is φ = 9934625563920.

The previous prime is 9990655501483. The next prime is 9990655501549. The reversal of 9990655501501 is 1051055560999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9990655501501 - 2¹¹ = 9990655499453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990655501571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143181 + ... + 4472338.

It is an arithmetic number, because the mean of its divisors is an integer number (1255836836800).

Almost surely, 2^{9990655501501} is an apocalyptic number.

It is an amenable number.

9990655501501 is a deficient number, since it is larger than the sum of its proper divisors (56039192899).

9990655501501 is a wasteful number, since it uses less digits than its factorization.

9990655501501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627659.

The product of its (nonzero) digits is 2733750, while the sum is 55.

The spelling of 9990655501501 in words is "nine trillion, nine hundred ninety billion, six hundred fifty-five million, five hundred one thousand, five hundred one".