6634585485991 has 32 divisors (see below), whose sum is σ = 7184336544000. Its totient is φ = 6105459462912.

The previous prime is 6634585485971. The next prime is 6634585486013. The reversal of 6634585485991 is 1995845854366.

It is a cyclic number.

It is not a de Polignac number, because 6634585485991 - 2¹¹ = 6634585483943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6634585485971) 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, 1874704500 + ... + 1874708038.

It is an arithmetic number, because the mean of its divisors is an integer number (224510517000).

Almost surely, 2^{6634585485991} is an apocalyptic number.

6634585485991 is a deficient number, since it is larger than the sum of its proper divisors (549751058009).

6634585485991 is a wasteful number, since it uses less digits than its factorization.

6634585485991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7231.

The product of its digits is 1119744000, while the sum is 73.

The spelling of 6634585485991 in words is "six trillion, six hundred thirty-four billion, five hundred eighty-five million, four hundred eighty-five thousand, nine hundred ninety-one".