13850684945 has 4 divisors (see below), whose sum is σ = 16620821940. Its totient is φ = 11080547952.

The previous prime is 13850684921. The next prime is 13850684963. The reversal of 13850684945 is 54948605831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6321999121 + 7528685824 = 79511^2 + 86768^2 .

It is a cyclic number.

It is not a de Polignac number, because 13850684945 - 2⁸ = 13850684689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385068490 + ... + 1385068499.

It is an arithmetic number, because the mean of its divisors is an integer number (4155205485).

Almost surely, 2^13850684945 is an apocalyptic number.

It is an amenable number.

13850684945 is a deficient number, since it is larger than the sum of its proper divisors (2770136995).

13850684945 is an equidigital number, since it uses as much as digits as its factorization.

13850684945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770136994.

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 13850684945 in words is "thirteen billion, eight hundred fifty million, six hundred eighty-four thousand, nine hundred forty-five".