47644945919 has 8 divisors (see below), whose sum is σ = 48760775280. Its totient is φ = 46542016576.

The previous prime is 47644945903. The next prime is 47644945937. The reversal of 47644945919 is 91954944674.

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 47644945919 - 2⁴ = 47644945903 is a prime.

It is a super-2 number, since 2×47644945919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47644945949) 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, 3217532 + ... + 3232305.

It is an arithmetic number, because the mean of its divisors is an integer number (6095096910).

Almost surely, 2^47644945919 is an apocalyptic number.

47644945919 is a deficient number, since it is larger than the sum of its proper divisors (1115829361).

47644945919 is an equidigital number, since it uses as much as digits as its factorization.

47644945919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450009.

The product of its digits is 39191040, while the sum is 62.

The spelling of 47644945919 in words is "forty-seven billion, six hundred forty-four million, nine hundred forty-five thousand, nine hundred nineteen".