15500045505 has 16 divisors (see below), whose sum is σ = 28342940544. Its totient is φ = 7085735040.

The previous prime is 15500045489. The next prime is 15500045569. The reversal of 15500045505 is 50554000551.

It is not a de Polignac number, because 15500045505 - 2⁴ = 15500045489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73809636 + ... + 73809845.

It is an arithmetic number, because the mean of its divisors is an integer number (1771433784).

Almost surely, 2^15500045505 is an apocalyptic number.

15500045505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15500045505 is a deficient number, since it is larger than the sum of its proper divisors (12842895039).

15500045505 is a wasteful number, since it uses less digits than its factorization.

15500045505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147619496.

The product of its (nonzero) digits is 12500, while the sum is 30.

The spelling of 15500045505 in words is "fifteen billion, five hundred million, forty-five thousand, five hundred five".