45237211209 has 24 divisors (see below), whose sum is σ = 67939802112. Its totient is φ = 30079337040.

The previous prime is 45237211199. The next prime is 45237211223. The reversal of 45237211209 is 90211273254.

45237211209 is a `hidden beast` number, since 4 + 5 + 237 + 211 + 209 = 666.

It is not a de Polignac number, because 45237211209 - 2⁵ = 45237211177 is a prime.

It is a super-3 number, since 3×45237211209³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45237211289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149962 + ... + 336099.

It is an arithmetic number, because the mean of its divisors is an integer number (2830825088).

Almost surely, 2^45237211209 is an apocalyptic number.

It is an amenable number.

45237211209 is a deficient number, since it is larger than the sum of its proper divisors (22702590903).

45237211209 is an equidigital number, since it uses as much as digits as its factorization.

45237211209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486459 (or 486447 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 45237211209 in words is "forty-five billion, two hundred thirty-seven million, two hundred eleven thousand, two hundred nine".