215013143655 has 80 divisors (see below), whose sum is σ = 405876108000. Its totient is φ = 108595572480.

The previous prime is 215013143621. The next prime is 215013143671. The reversal of 215013143655 is 556341310512.

215013143655 is a `hidden beast` number, since 2 + 1 + 501 + 3 + 143 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 215013143655 - 2¹⁴ = 215013127271 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 30938121 + ... + 30945069.

It is an arithmetic number, because the mean of its divisors is an integer number (5073451350).

Almost surely, 2^215013143655 is an apocalyptic number.

215013143655 is a deficient number, since it is larger than the sum of its proper divisors (190862964345).

215013143655 is a wasteful number, since it uses less digits than its factorization.

215013143655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11006 (or 10997 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 215013143655 in words is "two hundred fifteen billion, thirteen million, one hundred forty-three thousand, six hundred fifty-five".