5281196661 has 48 divisors (see below), whose sum is σ = 8848840000. Its totient is φ = 3007259136.

The previous prime is 5281196651. The next prime is 5281196663. The reversal of 5281196661 is 1666911825.

It is not a de Polignac number, because 5281196661 - 2⁷ = 5281196533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5281196663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67965 + ... + 123213.

Almost surely, 2^5281196661 is an apocalyptic number.

It is an amenable number.

5281196661 is a deficient number, since it is larger than the sum of its proper divisors (3567643339).

5281196661 is a wasteful number, since it uses less digits than its factorization.

5281196661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55330 (or 55327 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 5281196661 is about 72671.8422843401. The cubic root of 5281196661 is about 1741.4490792312.

The spelling of 5281196661 in words is "five billion, two hundred eighty-one million, one hundred ninety-six thousand, six hundred sixty-one".