5331536643491 has 4 divisors (see below), whose sum is σ = 5331850631184. Its totient is φ = 5331222655800.

The previous prime is 5331536643487. The next prime is 5331536643509. The reversal of 5331536643491 is 1943466351335.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5331536643491 - 2² = 5331536643487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5331536643791) 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 3 ways as a sum of consecutive naturals, for example, 156968375 + ... + 157002336.

It is an arithmetic number, because the mean of its divisors is an integer number (1332962657796).

Almost surely, 2^{5331536643491} is an apocalyptic number.

5331536643491 is a deficient number, since it is larger than the sum of its proper divisors (313987693).

5331536643491 is a wasteful number, since it uses less digits than its factorization.

5331536643491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313987692.

The product of its digits is 10497600, while the sum is 53.

The spelling of 5331536643491 in words is "five trillion, three hundred thirty-one billion, five hundred thirty-six million, six hundred forty-three thousand, four hundred ninety-one".