213530709507 has 16 divisors (see below), whose sum is σ = 302985362592. Its totient is φ = 133299944960.

The previous prime is 213530709487. The next prime is 213530709551. The reversal of 213530709507 is 705907035312.

It is a cyclic number.

It is not a de Polignac number, because 213530709507 - 2⁶ = 213530709443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213530709577) 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, 10616544 + ... + 10636637.

It is an arithmetic number, because the mean of its divisors is an integer number (18936585162).

Almost surely, 2^213530709507 is an apocalyptic number.

213530709507 is a deficient number, since it is larger than the sum of its proper divisors (89454653085).

213530709507 is a wasteful number, since it uses less digits than its factorization.

213530709507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21253398.

The product of its (nonzero) digits is 198450, while the sum is 42.

The spelling of 213530709507 in words is "two hundred thirteen billion, five hundred thirty million, seven hundred nine thousand, five hundred seven".