215369718380 has 24 divisors (see below), whose sum is σ = 455577702048. Its totient is φ = 85519069568.

The previous prime is 215369718379. The next prime is 215369718383. The reversal of 215369718380 is 83817963512.

215369718380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (215369718383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39298304 + ... + 39303783.

It is an arithmetic number, because the mean of its divisors is an integer number (18982404252).

Almost surely, 2^215369718380 is an apocalyptic number.

215369718380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215369718380 is an abundant number, since it is smaller than the sum of its proper divisors (240207983668).

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

215369718380 is a wasteful number, since it uses less digits than its factorization.

215369718380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78602233 (or 78602231 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 215369718380 in words is "two hundred fifteen billion, three hundred sixty-nine million, seven hundred eighteen thousand, three hundred eighty".