6461577797149 has 16 divisors (see below), whose sum is σ = 6853126279680. Its totient is φ = 6071303911680.

The previous prime is 6461577797137. The next prime is 6461577797159. The reversal of 6461577797149 is 9417977751646.

It is a cyclic number.

It is not a de Polignac number, because 6461577797149 - 2⁵ = 6461577797117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461577797119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169714287 + ... + 169752355.

It is an arithmetic number, because the mean of its divisors is an integer number (428320392480).

Almost surely, 2^{6461577797149} is an apocalyptic number.

It is an amenable number.

6461577797149 is a deficient number, since it is larger than the sum of its proper divisors (391548482531).

6461577797149 is a wasteful number, since it uses less digits than its factorization.

6461577797149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54540.

The product of its digits is 560105280, while the sum is 73.

The spelling of 6461577797149 in words is "six trillion, four hundred sixty-one billion, five hundred seventy-seven million, seven hundred ninety-seven thousand, one hundred forty-nine".