47564291661 has 8 divisors (see below), whose sum is σ = 63430780320. Its totient is φ = 31703665392.

The previous prime is 47564291641. The next prime is 47564291669. The reversal of 47564291661 is 16619246574.

It is a happy number.

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

It is not a de Polignac number, because 47564291661 - 2¹⁴ = 47564275277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47564291669) 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 7 ways as a sum of consecutive naturals, for example, 1446630 + ... + 1479143.

It is an arithmetic number, because the mean of its divisors is an integer number (7928847540).

Almost surely, 2^47564291661 is an apocalyptic number.

It is an amenable number.

47564291661 is a deficient number, since it is larger than the sum of its proper divisors (15866488659).

47564291661 is a wasteful number, since it uses less digits than its factorization.

47564291661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931195.

The product of its digits is 2177280, while the sum is 51.

The spelling of 47564291661 in words is "forty-seven billion, five hundred sixty-four million, two hundred ninety-one thousand, six hundred sixty-one".