13719561745 has 8 divisors (see below), whose sum is σ = 16626479400. Its totient is φ = 10866979200.

The previous prime is 13719561727. The next prime is 13719561761. The reversal of 13719561745 is 54716591731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8933274256 + 4786287489 = 94516^2 + 69183^2 .

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

It is not a de Polignac number, because 13719561745 - 2¹¹ = 13719559697 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 13583220 + ... + 13584229.

It is an arithmetic number, because the mean of its divisors is an integer number (2078309925).

Almost surely, 2^13719561745 is an apocalyptic number.

It is an amenable number.

13719561745 is a deficient number, since it is larger than the sum of its proper divisors (2906917655).

13719561745 is a wasteful number, since it uses less digits than its factorization.

13719561745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27167555.

The product of its digits is 793800, while the sum is 49.

The spelling of 13719561745 in words is "thirteen billion, seven hundred nineteen million, five hundred sixty-one thousand, seven hundred forty-five".