47644522091 has 8 divisors (see below), whose sum is σ = 48787423200. Its totient is φ = 46510656192.

The previous prime is 47644522087. The next prime is 47644522111. The reversal of 47644522091 is 19022544674.

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

It is a cyclic number.

It is not a de Polignac number, because 47644522091 - 2² = 47644522087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47644522061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248130 + ... + 2269223.

It is an arithmetic number, because the mean of its divisors is an integer number (6098427900).

Almost surely, 2^47644522091 is an apocalyptic number.

47644522091 is a deficient number, since it is larger than the sum of its proper divisors (1142901109).

47644522091 is a wasteful number, since it uses less digits than its factorization.

47644522091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517605.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 47644522091 in words is "forty-seven billion, six hundred forty-four million, five hundred twenty-two thousand, ninety-one".