13501397044 has 24 divisors (see below), whose sum is σ = 23748167520. Its totient is φ = 6716288736.

The previous prime is 13501397029. The next prime is 13501397057. The reversal of 13501397044 is 44079310531.

It is a junction number, because it is equal to n+sod(n) for n = 13501396994 and 13501397012.

It is a congruent number.

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, 674127 + ... + 693865.

It is an arithmetic number, because the mean of its divisors is an integer number (989506980).

Almost surely, 2^13501397044 is an apocalyptic number.

It is an amenable number.

13501397044 is a deficient number, since it is larger than the sum of its proper divisors (10246770476).

13501397044 is a wasteful number, since it uses less digits than its factorization.

13501397044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20607 (or 20605 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 13501397044 in words is "thirteen billion, five hundred one million, three hundred ninety-seven thousand, forty-four".