5991266621995 has 16 divisors (see below), whose sum is σ = 7366855366080. Its totient is φ = 4674852582400.

The previous prime is 5991266621987. The next prime is 5991266621999.

5991266621995 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5991266621995 - 2³ = 5991266621987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5991266621999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3166846 + ... + 4691635.

It is an arithmetic number, because the mean of its divisors is an integer number (460428460380).

Almost surely, 2^{5991266621995} is an apocalyptic number.

5991266621995 is a deficient number, since it is larger than the sum of its proper divisors (1375588744085).

5991266621995 is a wasteful number, since it uses less digits than its factorization.

5991266621995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862246.

The product of its digits is 141717600, while the sum is 70.

The spelling of 5991266621995 in words is "five trillion, nine hundred ninety-one billion, two hundred sixty-six million, six hundred twenty-one thousand, nine hundred ninety-five".