47457117517 has 4 divisors (see below), whose sum is σ = 47463955776. Its totient is φ = 47450279260.

The previous prime is 47457117503. The next prime is 47457117527. The reversal of 47457117517 is 71571175474.

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-47457117517 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47457117527) 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, 3408709 + ... + 3422602.

It is an arithmetic number, because the mean of its divisors is an integer number (11865988944).

Almost surely, 2^47457117517 is an apocalyptic number.

It is an amenable number.

47457117517 is a deficient number, since it is larger than the sum of its proper divisors (6838259).

47457117517 is an equidigital number, since it uses as much as digits as its factorization.

47457117517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6838258.

The product of its digits is 960400, while the sum is 49.

The spelling of 47457117517 in words is "forty-seven billion, four hundred fifty-seven million, one hundred seventeen thousand, five hundred seventeen".