47172170207385 has 24 divisors (see below), whose sum is σ = 81844401697344. Its totient is φ = 25134088724640.

The previous prime is 47172170207363. The next prime is 47172170207389. The reversal of 47172170207385 is 58370207127174.

It is a happy number.

47172170207385 is a `hidden beast` number, since 4 + 7 + 1 + 72 + 170 + 20 + 7 + 385 = 666.

It is not a de Polignac number, because 47172170207385 - 2¹² = 47172170203289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47172170207389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 508329187 + ... + 508421976.

It is an arithmetic number, because the mean of its divisors is an integer number (3410183404056).

Almost surely, 2^{47172170207385} is an apocalyptic number.

47172170207385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47172170207385 is a deficient number, since it is larger than the sum of its proper divisors (34672231489959).

47172170207385 is a wasteful number, since it uses less digits than its factorization.

47172170207385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016752205 (or 1016752202 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 54.

The spelling of 47172170207385 in words is "forty-seven trillion, one hundred seventy-two billion, one hundred seventy million, two hundred seven thousand, three hundred eighty-five".