215040545876 has 12 divisors (see below), whose sum is σ = 405268721172. Its totient is φ = 99249482688.

The previous prime is 215040545869. The next prime is 215040545879. The reversal of 215040545876 is 678545040512.

It can be written as a sum of positive squares in 2 ways, for example, as 98709072400 + 116331473476 = 314180^2 + 341074^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215040545876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215040545879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067697505 + ... + 2067697608.

It is an arithmetic number, because the mean of its divisors is an integer number (33772393431).

Almost surely, 2^215040545876 is an apocalyptic number.

215040545876 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

215040545876 is a deficient number, since it is larger than the sum of its proper divisors (190228175296).

215040545876 is a wasteful number, since it uses less digits than its factorization.

215040545876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135395130 (or 4135395128 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 47.

The spelling of 215040545876 in words is "two hundred fifteen billion, forty million, five hundred forty-five thousand, eight hundred seventy-six".