45505510091 has 2 divisors, whose sum is σ = 45505510092. Its totient is φ = 45505510090.

The previous prime is 45505510079. The next prime is 45505510129. The reversal of 45505510091 is 19001550554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45505510091 - 2¹⁴ = 45505493707 is a prime.

It is not a weakly prime, because it can be changed into another prime (45505510691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22752755045 + 22752755046.

It is an arithmetic number, because the mean of its divisors is an integer number (22752755046).

Almost surely, 2^45505510091 is an apocalyptic number.

45505510091 is a deficient number, since it is larger than the sum of its proper divisors (1).

45505510091 is an equidigital number, since it uses as much as digits as its factorization.

45505510091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 45505510091 in words is "forty-five billion, five hundred five million, five hundred ten thousand, ninety-one".