213087557192 has 8 divisors (see below), whose sum is σ = 399539169750. Its totient is φ = 106543778592.

The previous prime is 213087557183. The next prime is 213087557227. The reversal of 213087557192 is 291755780312.

It can be written as a sum of positive squares in only one way, i.e., 189508726276 + 23578830916 = 435326^2 + 153554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 213087557192.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13317972317 + ... + 13317972332.

Almost surely, 2^213087557192 is an apocalyptic number.

It is an amenable number.

213087557192 is a deficient number, since it is larger than the sum of its proper divisors (186451612558).

213087557192 is a wasteful number, since it uses less digits than its factorization.

213087557192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26635944655 (or 26635944651 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 213087557192 in words is "two hundred thirteen billion, eighty-seven million, five hundred fifty-seven thousand, one hundred ninety-two".