215215460180 has 48 divisors (see below), whose sum is σ = 526262728320. Its totient is φ = 72395925888.

The previous prime is 215215460171. The next prime is 215215460203. The reversal of 215215460180 is 81064512512.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 215215460180.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14494970 + ... + 14509809.

It is an arithmetic number, because the mean of its divisors is an integer number (10963806840).

Almost surely, 2^215215460180 is an apocalyptic number.

215215460180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215215460180 is an abundant number, since it is smaller than the sum of its proper divisors (311047268140).

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

215215460180 is a wasteful number, since it uses less digits than its factorization.

215215460180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29004848 (or 29004846 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

Adding to 215215460180 its reverse (81064512512), we get a palindrome (296279972692).

The spelling of 215215460180 in words is "two hundred fifteen billion, two hundred fifteen million, four hundred sixty thousand, one hundred eighty".