6581409953161 has 8 divisors (see below), whose sum is σ = 6589542685824. Its totient is φ = 6573279214320.

The previous prime is 6581409953081. The next prime is 6581409953179. The reversal of 6581409953161 is 1613599041856.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6581409953161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6581409953096 and 6581409953105.

It is not an unprimeable number, because it can be changed into a prime (6581409953761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6162331 + ... + 7151023.

It is an arithmetic number, because the mean of its divisors is an integer number (823692835728).

Almost surely, 2^{6581409953161} is an apocalyptic number.

It is an amenable number.

6581409953161 is a deficient number, since it is larger than the sum of its proper divisors (8132732663).

6581409953161 is an equidigital number, since it uses as much as digits as its factorization.

6581409953161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996911.

The product of its (nonzero) digits is 6998400, while the sum is 58.

The spelling of 6581409953161 in words is "six trillion, five hundred eighty-one billion, four hundred nine million, nine hundred fifty-three thousand, one hundred sixty-one".