2185505800870 has 32 divisors (see below), whose sum is σ = 4496160151296. Its totient is φ = 749272524000.

The previous prime is 2185505800867. The next prime is 2185505800897. The reversal of 2185505800870 is 780085055812.

It is a congruent 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, 307545 + ... + 2113195.

It is an arithmetic number, because the mean of its divisors is an integer number (140505004728).

Almost surely, 2^{2185505800870} is an apocalyptic number.

2185505800870 is an abundant number, since it is smaller than the sum of its proper divisors (2310654350426).

2185505800870 is a wasteful number, since it uses less digits than its factorization.

2185505800870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822956.

The product of its (nonzero) digits is 896000, while the sum is 49.

The spelling of 2185505800870 in words is "two trillion, one hundred eighty-five billion, five hundred five million, eight hundred thousand, eight hundred seventy".