13857505858 has 48 divisors (see below), whose sum is σ = 25017984000. Its totient is φ = 5733987840.

The previous prime is 13857505853. The next prime is 13857505861. The reversal of 13857505858 is 85850575831.

It is a junction number, because it is equal to n+sod(n) for n = 13857505799 and 13857505808.

It is not an unprimeable number, because it can be changed into a prime (13857505853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1358983 + ... + 1369141.

It is an arithmetic number, because the mean of its divisors is an integer number (521208000).

Almost surely, 2^13857505858 is an apocalyptic number.

13857505858 is a deficient number, since it is larger than the sum of its proper divisors (11160478142).

13857505858 is a wasteful number, since it uses less digits than its factorization.

13857505858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655 (or 10648 counting only the distinct ones).

The product of its (nonzero) digits is 6720000, while the sum is 55.

The spelling of 13857505858 in words is "thirteen billion, eight hundred fifty-seven million, five hundred five thousand, eight hundred fifty-eight".