13785557506 has 16 divisors (see below), whose sum is σ = 24019801920. Its totient is φ = 5811241680.

The previous prime is 13785557497. The next prime is 13785557507. The reversal of 13785557506 is 60575558731.

13785557506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13785557507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8070316 + ... + 8072023.

It is an arithmetic number, because the mean of its divisors is an integer number (1501237620).

Almost surely, 2^13785557506 is an apocalyptic number.

13785557506 is a deficient number, since it is larger than the sum of its proper divisors (10234244414).

13785557506 is a wasteful number, since it uses less digits than its factorization.

13785557506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16142409.

The product of its (nonzero) digits is 4410000, while the sum is 52.

The spelling of 13785557506 in words is "thirteen billion, seven hundred eighty-five million, five hundred fifty-seven thousand, five hundred six".