6452736985491 has 4 divisors (see below), whose sum is σ = 8603649313992. Its totient is φ = 4301824656992.

The previous prime is 6452736985483. The next prime is 6452736985529. The reversal of 6452736985491 is 1945896372546.

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 6452736985491 - 2³ = 6452736985483 is a prime.

It is a super-2 number, since 2×6452736985491² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6452736985451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075456164246 + ... + 1075456164251.

It is an arithmetic number, because the mean of its divisors is an integer number (2150912328498).

Almost surely, 2^{6452736985491} is an apocalyptic number.

6452736985491 is a deficient number, since it is larger than the sum of its proper divisors (2150912328501).

6452736985491 is a wasteful number, since it uses less digits than its factorization.

6452736985491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150912328500.

The product of its digits is 391910400, while the sum is 69.

The spelling of 6452736985491 in words is "six trillion, four hundred fifty-two billion, seven hundred thirty-six million, nine hundred eighty-five thousand, four hundred ninety-one".