6461197518393 has 6 divisors (see below), whose sum is σ = 9332840859914. Its totient is φ = 4307465012256.

The previous prime is 6461197518341. The next prime is 6461197518401. The reversal of 6461197518393 is 3938157911646.

It is a happy number.

6461197518393 is a `hidden beast` number, since 6 + 4 + 6 + 1 + 197 + 51 + 8 + 393 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6461194604544 + 2913849 = 2541888^2 + 1707^2 .

It is not a de Polignac number, because 6461197518393 - 2²⁹ = 6460660647481 is a prime.

It is a super-3 number, since 3×6461197518393³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6461197518393.

It is not an unprimeable number, because it can be changed into a prime (6461197518323) 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 5 ways as a sum of consecutive naturals, for example, 358955417680 + ... + 358955417697.

Almost surely, 2^{6461197518393} is an apocalyptic number.

It is an amenable number.

6461197518393 is a deficient number, since it is larger than the sum of its proper divisors (2871643341521).

6461197518393 is a wasteful number, since it uses less digits than its factorization.

6461197518393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717910835383 (or 717910835380 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 6461197518393 in words is "six trillion, four hundred sixty-one billion, one hundred ninety-seven million, five hundred eighteen thousand, three hundred ninety-three".