13730730673 has 24 divisors (see below), whose sum is σ = 15713067944. Its totient is φ = 11978461440.

The previous prime is 13730730623. The next prime is 13730730679. The reversal of 13730730673 is 37603703731.

It can be written as a sum of positive squares in 4 ways, for example, as 6864453904 + 6866276769 = 82852^2 + 82863^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13730730673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13730730679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305815 + ... + 347827.

Almost surely, 2^13730730673 is an apocalyptic number.

It is an amenable number.

13730730673 is a deficient number, since it is larger than the sum of its proper divisors (1982337271).

13730730673 is a wasteful number, since it uses less digits than its factorization.

13730730673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42145 (or 42134 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 40.

The spelling of 13730730673 in words is "thirteen billion, seven hundred thirty million, seven hundred thirty thousand, six hundred seventy-three".