45350221993 has 2 divisors, whose sum is σ = 45350221994. Its totient is φ = 45350221992.

The previous prime is 45350221981. The next prime is 45350222003. The reversal of 45350221993 is 39912205354.

45350221993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39015335529 + 6334886464 = 197523^2 + 79592^2 .

It is a cyclic number.

It is not a de Polignac number, because 45350221993 - 2⁹ = 45350221481 is a prime.

It is not a weakly prime, because it can be changed into another prime (45350221493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22675110996 + 22675110997.

It is an arithmetic number, because the mean of its divisors is an integer number (22675110997).

Almost surely, 2^45350221993 is an apocalyptic number.

It is an amenable number.

45350221993 is a deficient number, since it is larger than the sum of its proper divisors (1).

45350221993 is an equidigital number, since it uses as much as digits as its factorization.

45350221993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 45350221993 in words is "forty-five billion, three hundred fifty million, two hundred twenty-one thousand, nine hundred ninety-three".