215200018958764 has 96 divisors (see below), whose sum is σ = 445763118366720. Its totient is φ = 88956343713600.

The previous prime is 215200018958747. The next prime is 215200018958801. The reversal of 215200018958764 is 467859810002512.

215200018958764 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 2×215200018958764² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215200018958699 and 215200018958708.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6171300249 + ... + 6171335119.

It is an arithmetic number, because the mean of its divisors is an integer number (4643365816320).

Almost surely, 2^{215200018958764} 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 215200018958764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222881559183360).

215200018958764 is an abundant number, since it is smaller than the sum of its proper divisors (230563099407956).

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

215200018958764 is a wasteful number, since it uses less digits than its factorization.

215200018958764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58379 (or 58377 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 215200018958764 in words is "two hundred fifteen trillion, two hundred billion, eighteen million, nine hundred fifty-eight thousand, seven hundred sixty-four".