45047129918 has 24 divisors (see below), whose sum is σ = 82020155472. Its totient is φ = 18466524384.

The previous prime is 45047129899. The next prime is 45047129929. The reversal of 45047129918 is 81992174054.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9990455 + ... + 9994962.

It is an arithmetic number, because the mean of its divisors is an integer number (3417506478).

Almost surely, 2^45047129918 is an apocalyptic number.

45047129918 is a deficient number, since it is larger than the sum of its proper divisors (36973025554).

45047129918 is a wasteful number, since it uses less digits than its factorization.

45047129918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19985456 (or 19985449 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 45047129918 in words is "forty-five billion, forty-seven million, one hundred twenty-nine thousand, nine hundred eighteen".