13851573668 has 6 divisors (see below), whose sum is σ = 24240253926. Its totient is φ = 6925786832.

The previous prime is 13851573653. The next prime is 13851573683. The reversal of 13851573668 is 86637515831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13851573653) and next prime (13851573683).

It can be written as a sum of positive squares in only one way, i.e., 9778836544 + 4072737124 = 98888^2 + 63818^2 .

It is an unprimeable number.

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, 1731446705 + ... + 1731446712.

It is an arithmetic number, because the mean of its divisors is an integer number (4040042321).

Almost surely, 2^13851573668 is an apocalyptic number.

It is an amenable number.

13851573668 is a deficient number, since it is larger than the sum of its proper divisors (10388680258).

13851573668 is a wasteful number, since it uses less digits than its factorization.

13851573668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462893421 (or 3462893419 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 53.

The spelling of 13851573668 in words is "thirteen billion, eight hundred fifty-one million, five hundred seventy-three thousand, six hundred sixty-eight".