6505450297623 has 12 divisors (see below), whose sum is σ = 9949512220128. Its totient is φ = 4081851167040.

The previous prime is 6505450297517. The next prime is 6505450297631. The reversal of 6505450297623 is 3267920545056.

It is a happy number.

6505450297623 is a `hidden beast` number, since 6 + 5 + 0 + 5 + 4 + 5 + 0 + 2 + 9 + 7 + 623 = 666.

It is not a de Polignac number, because 6505450297623 - 2¹⁸ = 6505450035479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6505450297623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505450296623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21259641343 + ... + 21259641648.

It is an arithmetic number, because the mean of its divisors is an integer number (829126018344).

Almost surely, 2^{6505450297623} is an apocalyptic number.

6505450297623 is a deficient number, since it is larger than the sum of its proper divisors (3444061922505).

6505450297623 is a wasteful number, since it uses less digits than its factorization.

6505450297623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42519283014 (or 42519283011 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 54.

The spelling of 6505450297623 in words is "six trillion, five hundred five billion, four hundred fifty million, two hundred ninety-seven thousand, six hundred twenty-three".