45243120451987 has 2 divisors, whose sum is σ = 45243120451988. Its totient is φ = 45243120451986.

The previous prime is 45243120451957. The next prime is 45243120452003. The reversal of 45243120451987 is 78915402134254.

45243120451987 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 is a cyclic number.

It is not a de Polignac number, because 45243120451987 - 2³⁹ = 44693364638099 is a prime.

It is not a weakly prime, because it can be changed into another prime (45243120451927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22621560225993 + 22621560225994.

It is an arithmetic number, because the mean of its divisors is an integer number (22621560225994).

Almost surely, 2^{45243120451987} is an apocalyptic number.

45243120451987 is a deficient number, since it is larger than the sum of its proper divisors (1).

45243120451987 is an equidigital number, since it uses as much as digits as its factorization.

45243120451987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 45243120451987 in words is "forty-five trillion, two hundred forty-three billion, one hundred twenty million, four hundred fifty-one thousand, nine hundred eighty-seven".