210133535545 has 4 divisors (see below), whose sum is σ = 252160242660. Its totient is φ = 168106828432.

The previous prime is 210133535537. The next prime is 210133535551. The reversal of 210133535545 is 545535331012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33534399376 + 176599136169 = 183124^2 + 420237^2 .

It is a cyclic number.

It is not a de Polignac number, because 210133535545 - 2³ = 210133535537 is a prime.

It is a super-2 number, since 2×210133535545² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21013353550 + ... + 21013353559.

It is an arithmetic number, because the mean of its divisors is an integer number (63040060665).

Almost surely, 2^210133535545 is an apocalyptic number.

It is an amenable number.

210133535545 is a deficient number, since it is larger than the sum of its proper divisors (42026707115).

210133535545 is an equidigital number, since it uses as much as digits as its factorization.

210133535545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42026707114.

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 210133535545 its reverse (545535331012), we get a palindrome (755668866557).

The spelling of 210133535545 in words is "two hundred ten billion, one hundred thirty-three million, five hundred thirty-five thousand, five hundred forty-five".