45138491518 has 8 divisors (see below), whose sum is σ = 68468498640. Its totient is φ = 22315658640.

The previous prime is 45138491483. The next prime is 45138491521. The reversal of 45138491518 is 81519483154.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 126793338 + ... + 126793693.

It is an arithmetic number, because the mean of its divisors is an integer number (8558562330).

Almost surely, 2^45138491518 is an apocalyptic number.

45138491518 is a deficient number, since it is larger than the sum of its proper divisors (23330007122).

45138491518 is a wasteful number, since it uses less digits than its factorization.

45138491518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253587122.

The product of its digits is 691200, while the sum is 49.

The spelling of 45138491518 in words is "forty-five billion, one hundred thirty-eight million, four hundred ninety-one thousand, five hundred eighteen".