213674437761 has 16 divisors (see below), whose sum is σ = 286621948224. Its totient is φ = 141588713024.

The previous prime is 213674437747. The next prime is 213674437763. The reversal of 213674437761 is 167734476312.

It is a cyclic number.

It is not a de Polignac number, because 213674437761 - 2⁷ = 213674437633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213674437763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1980370 + ... + 2085476.

It is an arithmetic number, because the mean of its divisors is an integer number (17913871764).

Almost surely, 2^213674437761 is an apocalyptic number.

It is an amenable number.

213674437761 is a deficient number, since it is larger than the sum of its proper divisors (72947510463).

213674437761 is a wasteful number, since it uses less digits than its factorization.

213674437761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109200.

The product of its digits is 3556224, while the sum is 51.

The spelling of 213674437761 in words is "two hundred thirteen billion, six hundred seventy-four million, four hundred thirty-seven thousand, seven hundred sixty-one".