45170378519 has 16 divisors (see below), whose sum is σ = 52172182080. Its totient is φ = 38307010560.

The previous prime is 45170378507. The next prime is 45170378537. The reversal of 45170378519 is 91587307154.

It is a happy number.

It is not a de Polignac number, because 45170378519 - 2²⁰ = 45169329943 is a prime.

It is a super-2 number, since 2×45170378519² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45170378579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399899 + ... + 500259.

It is an arithmetic number, because the mean of its divisors is an integer number (3260761380).

Almost surely, 2^45170378519 is an apocalyptic number.

45170378519 is a deficient number, since it is larger than the sum of its proper divisors (7001803561).

45170378519 is a wasteful number, since it uses less digits than its factorization.

45170378519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101050.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 45170378519 in words is "forty-five billion, one hundred seventy million, three hundred seventy-eight thousand, five hundred nineteen".