213799099375521 has 192 divisors, whose sum is σ = 376231474944000. Its totient is φ = 115461588464640.

The previous prime is 213799099375409. The next prime is 213799099375541. The reversal of 213799099375521 is 125573990997312.

213799099375521 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 9 + 9 + 0 + 9 + 93 + 7 + 5 + 521 = 666.

It is not a de Polignac number, because 213799099375521 - 2³³ = 213790509440929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213799099375521.

It is not an unprimeable number, because it can be changed into a prime (213799099375541) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1649250535 + ... + 1649380163.

It is an arithmetic number, because the mean of its divisors is an integer number (1959538932000).

Almost surely, 2^{213799099375521} is an apocalyptic number.

It is an amenable number.

213799099375521 is a deficient number, since it is larger than the sum of its proper divisors (162432375568479).

213799099375521 is a wasteful number, since it uses less digits than its factorization.

213799099375521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130324 (or 130321 counting only the distinct ones).

The product of its (nonzero) digits is 289340100, while the sum is 72.

The spelling of 213799099375521 in words is "two hundred thirteen trillion, seven hundred ninety-nine billion, ninety-nine million, three hundred seventy-five thousand, five hundred twenty-one".