213894125547 has 16 divisors (see below), whose sum is σ = 297835273728. Its totient is φ = 136284674240.

The previous prime is 213894125503. The next prime is 213894125569. The reversal of 213894125547 is 745521498312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213894125547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213894125547.

It is not an unprimeable number, because it can be changed into a prime (213894125447) 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, 1182954 + ... + 1351727.

It is an arithmetic number, because the mean of its divisors is an integer number (18614704608).

Almost surely, 2^213894125547 is an apocalyptic number.

213894125547 is a deficient number, since it is larger than the sum of its proper divisors (83941148181).

213894125547 is a wasteful number, since it uses less digits than its factorization.

213894125547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535930.

The product of its digits is 2419200, while the sum is 51.

The spelling of 213894125547 in words is "two hundred thirteen billion, eight hundred ninety-four million, one hundred twenty-five thousand, five hundred forty-seven".