13709573045 has 24 divisors (see below), whose sum is σ = 19144778328. Its totient is φ = 9397248000.

The previous prime is 13709573029. The next prime is 13709573069. The reversal of 13709573045 is 54037590731.

It can be written as a sum of positive squares in 4 ways, for example, as 4590469009 + 9119104036 = 67753^2 + 95494^2 .

It is not a de Polignac number, because 13709573045 - 2⁴ = 13709573029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13709572987 and 13709573005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 735845 + ... + 754245.

It is an arithmetic number, because the mean of its divisors is an integer number (797699097).

Almost surely, 2^13709573045 is an apocalyptic number.

It is an amenable number.

13709573045 is a deficient number, since it is larger than the sum of its proper divisors (5435205283).

13709573045 is a wasteful number, since it uses less digits than its factorization.

13709573045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21461 (or 21454 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 13709573045 in words is "thirteen billion, seven hundred nine million, five hundred seventy-three thousand, forty-five".