15803132805 has 40 divisors (see below), whose sum is σ = 28502492832. Its totient is φ = 8376594912.

The previous prime is 15803132803. The next prime is 15803132837. The reversal of 15803132805 is 50823130851.

It is not a de Polignac number, because 15803132805 - 2¹ = 15803132803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15803132805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15803132803) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 53679 + ... + 185708.

Almost surely, 2^15803132805 is an apocalyptic number.

15803132805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15803132805 is a deficient number, since it is larger than the sum of its proper divisors (12699360027).

15803132805 is a wasteful number, since it uses less digits than its factorization.

15803132805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239567 (or 239558 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 15803132805 in words is "fifteen billion, eight hundred three million, one hundred thirty-two thousand, eight hundred five".