216373601607870 has 128 divisors (see below), whose sum is σ = 628406147506176. Its totient is φ = 46546593140736.

The previous prime is 216373601607847. The next prime is 216373601607871. The reversal of 216373601607870 is 78706106373612.

216373601607870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216373601607870² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216373601607870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216373601607871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170990227 + ... + 172250993.

It is an arithmetic number, because the mean of its divisors is an integer number (4909423027392).

Almost surely, 2^{216373601607870} is an apocalyptic number.

216373601607870 is an abundant number, since it is smaller than the sum of its proper divisors (412032545898306).

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

216373601607870 is a wasteful number, since it uses less digits than its factorization.

216373601607870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308874.

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 216373601607870 in words is "two hundred sixteen trillion, three hundred seventy-three billion, six hundred one million, six hundred seven thousand, eight hundred seventy".