215064613611 has 48 divisors (see below), whose sum is σ = 331941442560. Its totient is φ = 133880402880.

The previous prime is 215064613567. The next prime is 215064613613. The reversal of 215064613611 is 116316460512.

215064613611 is a `hidden beast` number, since 2 + 1 + 5 + 0 + 646 + 1 + 3 + 6 + 1 + 1 = 666.

215064613611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215064613611 - 2¹³ = 215064605419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215064613613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13933080 + ... + 13948506.

It is an arithmetic number, because the mean of its divisors is an integer number (6915446720).

Almost surely, 2^215064613611 is an apocalyptic number.

215064613611 is a deficient number, since it is larger than the sum of its proper divisors (116876828949).

215064613611 is a wasteful number, since it uses less digits than its factorization.

215064613611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17216 (or 17213 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 215064613611 in words is "two hundred fifteen billion, sixty-four million, six hundred thirteen thousand, six hundred eleven".