852721909728 has 96 divisors (see below), whose sum is σ = 2537451907200. Its totient is φ = 248566703616.

The previous prime is 852721909727. The next prime is 852721909733. The reversal of 852721909728 is 827909127258.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852721909727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17957098 + ... + 18004521.

It is an arithmetic number, because the mean of its divisors is an integer number (26431790700).

Almost surely, 2^852721909728 is an apocalyptic number.

It is an amenable number.

852721909728 is an abundant number, since it is smaller than the sum of its proper divisors (1684729997472).

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

852721909728 is a wasteful number, since it uses less digits than its factorization.

852721909728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35961664 (or 35961656 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 60.

The spelling of 852721909728 in words is "eight hundred fifty-two billion, seven hundred twenty-one million, nine hundred nine thousand, seven hundred twenty-eight".