52685215890 has 32 divisors (see below), whose sum is σ = 126474708096. Its totient is φ = 14046036480.

The previous prime is 52685215889. The next prime is 52685215931. The reversal of 52685215890 is 9851258625.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80607 + ... + 334466.

It is an arithmetic number, because the mean of its divisors is an integer number (3952334628).

Almost surely, 2^52685215890 is an apocalyptic number.

52685215890 is an abundant number, since it is smaller than the sum of its proper divisors (73789492206).

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

52685215890 is a wasteful number, since it uses less digits than its factorization.

52685215890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419314.

The product of its (nonzero) digits is 1728000, while the sum is 51.

The spelling of 52685215890 in words is "fifty-two billion, six hundred eighty-five million, two hundred fifteen thousand, eight hundred ninety".