215030979072 has 480 divisors, whose sum is σ = 797414587200. Its totient is φ = 56709144576.

The previous prime is 215030979067. The next prime is 215030979083. The reversal of 215030979072 is 270979030512.

215030979072 is a `hidden beast` number, since 2 + 1 + 503 + 0 + 9 + 79 + 0 + 72 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8793679 + ... + 8818097.

It is an arithmetic number, because the mean of its divisors is an integer number (1661280390).

Almost surely, 2^215030979072 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 215030979072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398707293600).

215030979072 is an abundant number, since it is smaller than the sum of its proper divisors (582383608128).

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

215030979072 is a wasteful number, since it uses less digits than its factorization.

215030979072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24473 (or 24444 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 215030979072 in words is "two hundred fifteen billion, thirty million, nine hundred seventy-nine thousand, seventy-two".