213694267507 has 32 divisors (see below), whose sum is σ = 259021421568. Its totient is φ = 172346482176.

The previous prime is 213694267489. The next prime is 213694267513. The reversal of 213694267507 is 705762496312.

It is a happy number.

It is not a de Polignac number, because 213694267507 - 2³⁵ = 179334529139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213694267537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3079263 + ... + 3147895.

It is an arithmetic number, because the mean of its divisors is an integer number (8094419424).

Almost surely, 2^213694267507 is an apocalyptic number.

213694267507 is a deficient number, since it is larger than the sum of its proper divisors (45327154061).

213694267507 is a wasteful number, since it uses less digits than its factorization.

213694267507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68979.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 213694267507 in words is "two hundred thirteen billion, six hundred ninety-four million, two hundred sixty-seven thousand, five hundred seven".