3216287658870 has 192 divisors, whose sum is σ = 9830858139648. Its totient is φ = 719248032000.

The previous prime is 3216287658841. The next prime is 3216287658889. The reversal of 3216287658870 is 788567826123.

3216287658870 is a `hidden beast` number, since 3 + 21 + 6 + 28 + 7 + 6 + 588 + 7 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3216287658798 and 3216287658807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19363875 + ... + 19529265.

It is an arithmetic number, because the mean of its divisors is an integer number (51202386144).

Almost surely, 2^{3216287658870} is an apocalyptic number.

3216287658870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3216287658870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4915429069824).

3216287658870 is an abundant number, since it is smaller than the sum of its proper divisors (6614570480778).

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

3216287658870 is a wasteful number, since it uses less digits than its factorization.

3216287658870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166939 (or 166936 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 3216287658870 in words is "three trillion, two hundred sixteen billion, two hundred eighty-seven million, six hundred fifty-eight thousand, eight hundred seventy".