45211102009 has 2 divisors, whose sum is σ = 45211102010. Its totient is φ = 45211102008.

The previous prime is 45211102007. The next prime is 45211102039. The reversal of 45211102009 is 90020111254.

It is a happy number.

45211102009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35607690000 + 9603412009 = 188700^2 + 97997^2 .

It is a cyclic number.

It is not a de Polignac number, because 45211102009 - 2¹ = 45211102007 is a prime.

Together with 45211102007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45211102007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22605551004 + 22605551005.

It is an arithmetic number, because the mean of its divisors is an integer number (22605551005).

Almost surely, 2^45211102009 is an apocalyptic number.

It is an amenable number.

45211102009 is a deficient number, since it is larger than the sum of its proper divisors (1).

45211102009 is an equidigital number, since it uses as much as digits as its factorization.

45211102009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 45211102009 in words is "forty-five billion, two hundred eleven million, one hundred two thousand, nine".