6456172716546 has 64 divisors (see below), whose sum is σ = 14797697891328. Its totient is φ = 1839535299648.

The previous prime is 6456172716541. The next prime is 6456172716559.

6456172716546 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6456172716546² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6456172716546.

It is not an unprimeable number, because it can be changed into a prime (6456172716541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25949836 + ... + 26197448.

It is an arithmetic number, because the mean of its divisors is an integer number (231214029552).

Almost surely, 2^{6456172716546} is an apocalyptic number.

6456172716546 is an abundant number, since it is smaller than the sum of its proper divisors (8341525174782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6456172716546 is a wasteful number, since it uses less digits than its factorization.

6456172716546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249335.

The product of its digits is 50803200, while the sum is 60.

The spelling of 6456172716546 in words is "six trillion, four hundred fifty-six billion, one hundred seventy-two million, seven hundred sixteen thousand, five hundred forty-six".