13928215585 has 8 divisors (see below), whose sum is σ = 16861769640. Its totient is φ = 11043965184.

The previous prime is 13928215579. The next prime is 13928215597. The reversal of 13928215585 is 58551282931.

It can be written as a sum of positive squares in 4 ways, for example, as 1953728401 + 11974487184 = 44201^2 + 109428^2 .

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 13928215585 - 2²⁷ = 13793997857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12325290 + ... + 12326419.

It is an arithmetic number, because the mean of its divisors is an integer number (2107721205).

Almost surely, 2^13928215585 is an apocalyptic number.

It is an amenable number.

13928215585 is a deficient number, since it is larger than the sum of its proper divisors (2933554055).

13928215585 is a wasteful number, since it uses less digits than its factorization.

13928215585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24651827.

The product of its digits is 864000, while the sum is 49.

The spelling of 13928215585 in words is "thirteen billion, nine hundred twenty-eight million, two hundred fifteen thousand, five hundred eighty-five".