847172325640 has 32 divisors (see below), whose sum is σ = 1907614330560. Its totient is φ = 338606424000.

The previous prime is 847172325631. The next prime is 847172325673. The reversal of 847172325640 is 46523271748.

847172325640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8151036 + ... + 8254315.

It is an arithmetic number, because the mean of its divisors is an integer number (59612947830).

Almost surely, 2^847172325640 is an apocalyptic number.

It is an amenable number.

847172325640 is an abundant number, since it is smaller than the sum of its proper divisors (1060442004920).

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

847172325640 is a wasteful number, since it uses less digits than its factorization.

847172325640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16406653 (or 16406649 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 847172325640 in words is "eight hundred forty-seven billion, one hundred seventy-two million, three hundred twenty-five thousand, six hundred forty".