991133203001 has 8 divisors (see below), whose sum is σ = 1015600516224. Its totient is φ = 966679858080.

The previous prime is 991133202977. The next prime is 991133203033. The reversal of 991133203001 is 100302331199.

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 991133203001 - 2¹⁰ = 991133201977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (991133203901) by changing a digit.

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, 3348341 + ... + 3632306.

It is an arithmetic number, because the mean of its divisors is an integer number (126950064528).

Almost surely, 2^991133203001 is an apocalyptic number.

It is an amenable number.

991133203001 is a deficient number, since it is larger than the sum of its proper divisors (24467313223).

991133203001 is a wasteful number, since it uses less digits than its factorization.

991133203001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984151.

The product of its (nonzero) digits is 4374, while the sum is 32.

The spelling of 991133203001 in words is "nine hundred ninety-one billion, one hundred thirty-three million, two hundred three thousand, one".