45520109281 has 2 divisors, whose sum is σ = 45520109282. Its totient is φ = 45520109280.

The previous prime is 45520109207. The next prime is 45520109291. The reversal of 45520109281 is 18290102554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32972749056 + 12547360225 = 181584^2 + 112015^2 .

It is a cyclic number.

It is not a de Polignac number, because 45520109281 - 2²⁷ = 45385891553 is a prime.

It is a super-2 number, since 2×45520109281² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45520109281.

It is not a weakly prime, because it can be changed into another prime (45520109291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22760054640 + 22760054641.

It is an arithmetic number, because the mean of its divisors is an integer number (22760054641).

Almost surely, 2^45520109281 is an apocalyptic number.

It is an amenable number.

45520109281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45520109281 is an equidigital number, since it uses as much as digits as its factorization.

45520109281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 45520109281 in words is "forty-five billion, five hundred twenty million, one hundred nine thousand, two hundred eighty-one".