15655506505 has 8 divisors (see below), whose sum is σ = 18798164352. Its totient is φ = 12516700848.

The previous prime is 15655506469. The next prime is 15655506539. The reversal of 15655506505 is 50560555651.

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

It is a cyclic number.

It is not a de Polignac number, because 15655506505 - 2¹⁵ = 15655473737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954097 + ... + 970366.

It is an arithmetic number, because the mean of its divisors is an integer number (2349770544).

Almost surely, 2^15655506505 is an apocalyptic number.

It is an amenable number.

15655506505 is a deficient number, since it is larger than the sum of its proper divisors (3142657847).

15655506505 is a wasteful number, since it uses less digits than its factorization.

15655506505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926095.

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 15655506505 in words is "fifteen billion, six hundred fifty-five million, five hundred six thousand, five hundred five".