13501544745 has 32 divisors (see below), whose sum is σ = 23270688000. Its totient is φ = 6645060864.

The previous prime is 13501544743. The next prime is 13501544767. The reversal of 13501544745 is 54744510531.

It is not a de Polignac number, because 13501544745 - 2¹ = 13501544743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (13501544743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 920731 + ... + 935279.

It is an arithmetic number, because the mean of its divisors is an integer number (727209000).

Almost surely, 2^13501544745 is an apocalyptic number.

13501544745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13501544745 is a deficient number, since it is larger than the sum of its proper divisors (9769143255).

13501544745 is a wasteful number, since it uses less digits than its factorization.

13501544745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19329.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 13501544745 in words is "thirteen billion, five hundred one million, five hundred forty-four thousand, seven hundred forty-five".