3261645164870 has 16 divisors (see below), whose sum is σ = 5880265525728. Its totient is φ = 1302590459520.

The previous prime is 3261645164801. The next prime is 3261645164881. The reversal of 3261645164870 is 784615461623.

It is a happy number.

It is a congruent number.

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, 258444179 + ... + 258456798.

It is an arithmetic number, because the mean of its divisors is an integer number (367516595358).

Almost surely, 2^{3261645164870} is an apocalyptic number.

3261645164870 is a deficient number, since it is larger than the sum of its proper divisors (2618620360858).

3261645164870 is a wasteful number, since it uses less digits than its factorization.

3261645164870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516901615.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 3261645164870 in words is "three trillion, two hundred sixty-one billion, six hundred forty-five million, one hundred sixty-four thousand, eight hundred seventy".