45531301993 has 2 divisors, whose sum is σ = 45531301994. Its totient is φ = 45531301992.

The previous prime is 45531301969. The next prime is 45531302057. The reversal of 45531301993 is 39910313554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45272349529 + 258952464 = 212773^2 + 16092^2 .

It is a cyclic number.

It is not a de Polignac number, because 45531301993 - 2⁹ = 45531301481 is a prime.

It is a super-2 number, since 2×45531301993² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45531301903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22765650996 + 22765650997.

It is an arithmetic number, because the mean of its divisors is an integer number (22765650997).

Almost surely, 2^45531301993 is an apocalyptic number.

It is an amenable number.

45531301993 is a deficient number, since it is larger than the sum of its proper divisors (1).

45531301993 is an equidigital number, since it uses as much as digits as its factorization.

45531301993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 43.

The spelling of 45531301993 in words is "forty-five billion, five hundred thirty-one million, three hundred one thousand, nine hundred ninety-three".