47345671257 has 4 divisors (see below), whose sum is σ = 63127561680. Its totient is φ = 31563780836.

The previous prime is 47345671231. The next prime is 47345671271. The reversal of 47345671257 is 75217654374.

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 not a de Polignac number, because 47345671257 - 2¹⁵ = 47345638489 is a prime.

It is a super-2 number, since 2×47345671257² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47345671207) 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, 7890945207 + ... + 7890945212.

It is an arithmetic number, because the mean of its divisors is an integer number (15781890420).

Almost surely, 2^47345671257 is an apocalyptic number.

It is an amenable number.

47345671257 is a deficient number, since it is larger than the sum of its proper divisors (15781890423).

47345671257 is a wasteful number, since it uses less digits than its factorization.

47345671257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15781890422.

The product of its digits is 4939200, while the sum is 51.

The spelling of 47345671257 in words is "forty-seven billion, three hundred forty-five million, six hundred seventy-one thousand, two hundred fifty-seven".