45532530901981 has 2 divisors, whose sum is σ = 45532530901982. Its totient is φ = 45532530901980.

The previous prime is 45532530901931. The next prime is 45532530902009. The reversal of 45532530901981 is 18910903523554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41124067968025 + 4408462933956 = 6412805^2 + 2099634^2 .

It is a cyclic number.

It is not a de Polignac number, because 45532530901981 - 2⁷ = 45532530901853 is a prime.

It is a super-2 number, since 2×45532530901981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45532530901931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22766265450990 + 22766265450991.

It is an arithmetic number, because the mean of its divisors is an integer number (22766265450991).

Almost surely, 2^{45532530901981} is an apocalyptic number.

It is an amenable number.

45532530901981 is a deficient number, since it is larger than the sum of its proper divisors (1).

45532530901981 is an equidigital number, since it uses as much as digits as its factorization.

45532530901981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832000, while the sum is 55.

The spelling of 45532530901981 in words is "forty-five trillion, five hundred thirty-two billion, five hundred thirty million, nine hundred one thousand, nine hundred eighty-one".