13915785745 has 8 divisors (see below), whose sum is σ = 16707738600. Its totient is φ = 11126764800.

The previous prime is 13915785733. The next prime is 13915785791. The reversal of 13915785745 is 54758751931.

It can be written as a sum of positive squares in 4 ways, for example, as 659256976 + 13256528769 = 25676^2 + 115137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13915785745 - 2⁵ = 13915785713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722520 + ... + 741529.

It is an arithmetic number, because the mean of its divisors is an integer number (2088467325).

Almost surely, 2^13915785745 is an apocalyptic number.

It is an amenable number.

13915785745 is a deficient number, since it is larger than the sum of its proper divisors (2791952855).

13915785745 is a wasteful number, since it uses less digits than its factorization.

13915785745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465955.

The product of its digits is 5292000, while the sum is 55.

The spelling of 13915785745 in words is "thirteen billion, nine hundred fifteen million, seven hundred eighty-five thousand, seven hundred forty-five".