2991559491649 has 8 divisors (see below), whose sum is σ = 3000350326400. Its totient is φ = 2982769909200.

The previous prime is 2991559491647. The next prime is 2991559491677. The reversal of 2991559491649 is 9461949551992.

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 2991559491649 - 2¹ = 2991559491647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2991559491643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4583944 + ... + 5195734.

It is an arithmetic number, because the mean of its divisors is an integer number (375043790800).

Almost surely, 2^{2991559491649} is an apocalyptic number.

It is an amenable number.

2991559491649 is a deficient number, since it is larger than the sum of its proper divisors (8790834751).

2991559491649 is a wasteful number, since it uses less digits than its factorization.

2991559491649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626151.

The product of its digits is 283435200, while the sum is 73.

The spelling of 2991559491649 in words is "two trillion, nine hundred ninety-one billion, five hundred fifty-nine million, four hundred ninety-one thousand, six hundred forty-nine".