13940603505 has 48 divisors (see below), whose sum is σ = 24453000000. Its totient is φ = 7346360448.

The previous prime is 13940603473. The next prime is 13940603513. The reversal of 13940603505 is 50530604931.

13940603505 is a `hidden beast` number, since 1 + 3 + 9 + 40 + 603 + 5 + 0 + 5 = 666.

It is not a de Polignac number, because 13940603505 - 2⁵ = 13940603473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13940603505.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1855246 + ... + 1862744.

It is an arithmetic number, because the mean of its divisors is an integer number (509437500).

Almost surely, 2^13940603505 is an apocalyptic number.

13940603505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13940603505 is a deficient number, since it is larger than the sum of its proper divisors (10512396495).

13940603505 is a wasteful number, since it uses less digits than its factorization.

13940603505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7998 (or 7995 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 13940603505 in words is "thirteen billion, nine hundred forty million, six hundred three thousand, five hundred five".