213357825511 has 4 divisors (see below), whose sum is σ = 213601107832. Its totient is φ = 213114543192.

The previous prime is 213357825509. The next prime is 213357825563. The reversal of 213357825511 is 115528753312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213357825511 - 2¹ = 213357825509 is a prime.

It is a super-2 number, since 2×213357825511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213357825581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121639845 + ... + 121641598.

It is an arithmetic number, because the mean of its divisors is an integer number (53400276958).

Almost surely, 2^213357825511 is an apocalyptic number.

213357825511 is a deficient number, since it is larger than the sum of its proper divisors (243282321).

213357825511 is an equidigital number, since it uses as much as digits as its factorization.

213357825511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243282320.

The product of its digits is 252000, while the sum is 43.

The spelling of 213357825511 in words is "two hundred thirteen billion, three hundred fifty-seven million, eight hundred twenty-five thousand, five hundred eleven".