47172170370512 has 160 divisors (see below), whose sum is σ = 101869987046400. Its totient is φ = 20980694338560.

The previous prime is 47172170370407. The next prime is 47172170370527. The reversal of 47172170370512 is 21507307127174.

It is a super-2 number, since 2×47172170370512² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4138266989 + ... + 4138278387.

It is an arithmetic number, because the mean of its divisors is an integer number (636687419040).

Almost surely, 2^{47172170370512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47172170370512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50934993523200).

47172170370512 is an abundant number, since it is smaller than the sum of its proper divisors (54697816675888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47172170370512 is a wasteful number, since it uses less digits than its factorization.

47172170370512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13801 (or 13795 counting only the distinct ones).

The product of its (nonzero) digits is 576240, while the sum is 47.

Adding to 47172170370512 its reverse (21507307127174), we get a palindrome (68679477497686).

The spelling of 47172170370512 in words is "forty-seven trillion, one hundred seventy-two billion, one hundred seventy million, three hundred seventy thousand, five hundred twelve".