213896009115 has 24 divisors (see below), whose sum is σ = 370849013808. Its totient is φ = 114048354240.

The previous prime is 213896008999. The next prime is 213896009143. The reversal of 213896009115 is 511900698312.

213896009115 is a `hidden beast` number, since 2 + 1 + 38 + 9 + 600 + 9 + 1 + 1 + 5 = 666.

213896009115 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 213896009115 - 2³⁷ = 76457055643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 438541 + ... + 787470.

It is an arithmetic number, because the mean of its divisors is an integer number (15452042242).

Almost surely, 2^213896009115 is an apocalyptic number.

213896009115 is a deficient number, since it is larger than the sum of its proper divisors (156953004693).

213896009115 is a wasteful number, since it uses less digits than its factorization.

213896009115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229899 (or 1229896 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 213896009115 in words is "two hundred thirteen billion, eight hundred ninety-six million, nine thousand, one hundred fifteen".