47440217953 has 4 divisors (see below), whose sum is σ = 48011786928. Its totient is φ = 46868648980.

The previous prime is 47440217947. The next prime is 47440217971. The reversal of 47440217953 is 35971204474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47440217953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47440217053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285784363 + ... + 285784528.

It is an arithmetic number, because the mean of its divisors is an integer number (12002946732).

Almost surely, 2^47440217953 is an apocalyptic number.

It is an amenable number.

47440217953 is a deficient number, since it is larger than the sum of its proper divisors (571568975).

47440217953 is an equidigital number, since it uses as much as digits as its factorization.

47440217953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571568974.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 47440217953 in words is "forty-seven billion, four hundred forty million, two hundred seventeen thousand, nine hundred fifty-three".