13585844585858 has 8 divisors (see below), whose sum is σ = 20378792050428. Its totient is φ = 6792913902384.

The previous prime is 13585844585849. The next prime is 13585844585861. The reversal of 13585844585858 is 85858544858531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13350451745929 + 235392839929 = 3653827^2 + 485173^2 .

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

It is a super-2 number, since 2×13585844585858² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925741 + ... + 5556992.

Almost surely, 2^{13585844585858} is an apocalyptic number.

13585844585858 is a deficient number, since it is larger than the sum of its proper divisors (6792947464570).

13585844585858 is an equidigital number, since it uses as much as digits as its factorization.

13585844585858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390548.

The product of its digits is 4915200000, while the sum is 77.

The spelling of 13585844585858 in words is "thirteen trillion, five hundred eighty-five billion, eight hundred forty-four million, five hundred eighty-five thousand, eight hundred fifty-eight".