45243120451555 has 16 divisors (see below), whose sum is σ = 59124976777440. Its totient is φ = 33034907651328.

The previous prime is 45243120451553. The next prime is 45243120451559. The reversal of 45243120451555 is 55515402134254.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45243120451555 - 2¹ = 45243120451553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45243120451553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3910376277 + ... + 3910387846.

It is an arithmetic number, because the mean of its divisors is an integer number (3695311048590).

Almost surely, 2^{45243120451555} is an apocalyptic number.

45243120451555 is a deficient number, since it is larger than the sum of its proper divisors (13881856325885).

45243120451555 is a wasteful number, since it uses less digits than its factorization.

45243120451555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820764230.

The product of its (nonzero) digits is 2400000, while the sum is 46.

The spelling of 45243120451555 in words is "forty-five trillion, two hundred forty-three billion, one hundred twenty million, four hundred fifty-one thousand, five hundred fifty-five".