13651611604 has 6 divisors (see below), whose sum is σ = 23890320314. Its totient is φ = 6825805800.

The previous prime is 13651611601. The next prime is 13651611619. The reversal of 13651611604 is 40611615631.

It can be written as a sum of positive squares in only one way, i.e., 10805602500 + 2846009104 = 103950^2 + 53348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13651611604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13651611601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1706451447 + ... + 1706451454.

Almost surely, 2^13651611604 is an apocalyptic number.

It is an amenable number.

13651611604 is a deficient number, since it is larger than the sum of its proper divisors (10238708710).

13651611604 is a wasteful number, since it uses less digits than its factorization.

13651611604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412902905 (or 3412902903 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 13651611604 in words is "thirteen billion, six hundred fifty-one million, six hundred eleven thousand, six hundred four".