215087576964 has 72 divisors (see below), whose sum is σ = 544928791680. Its totient is φ = 66000235392.

The previous prime is 215087576947. The next prime is 215087576993. The reversal of 215087576964 is 469675780512.

It is a happy number.

215087576964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 215087576898 and 215087576907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599782 + ... + 888770.

It is an arithmetic number, because the mean of its divisors is an integer number (7568455440).

Almost surely, 2^215087576964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215087576964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272464395840).

215087576964 is an abundant number, since it is smaller than the sum of its proper divisors (329841214716).

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

215087576964 is a wasteful number, since it uses less digits than its factorization.

215087576964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289389 (or 289374 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 60.

The spelling of 215087576964 in words is "two hundred fifteen billion, eighty-seven million, five hundred seventy-six thousand, nine hundred sixty-four".