15878303045 has 54 divisors (see below), whose sum is σ = 21596822226. Its totient is φ = 11198468160.

The previous prime is 15878303027. The next prime is 15878303101. The reversal of 15878303045 is 54030387851.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3978329476 + 11899973569 = 63074^2 + 109087^2 .

It is not a de Polignac number, because 15878303045 - 2⁸ = 15878302789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15878302987 and 15878303005.

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 53 ways as a sum of consecutive naturals, for example, 145672451 + ... + 145672559.

Almost surely, 2^15878303045 is an apocalyptic number.

It is an amenable number.

15878303045 is a deficient number, since it is larger than the sum of its proper divisors (5718519181).

15878303045 is an equidigital number, since it uses as much as digits as its factorization.

15878303045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 15878303045 in words is "fifteen billion, eight hundred seventy-eight million, three hundred three thousand, forty-five".