13750503444 has 18 divisors (see below), whose sum is σ = 34758217130. Its totient is φ = 4583501136.

The previous prime is 13750503421. The next prime is 13750503451. The reversal of 13750503444 is 44430505731.

It can be written as a sum of positive squares in only one way, i.e., 10012403844 + 3738099600 = 100062^2 + 61140^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×13750503444² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 381958429 = 13750503444 / (1 + 3 + 7 + 5 + 0 + 5 + 0 + 3 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 13750503399 and 13750503408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190979179 + ... + 190979250.

Almost surely, 2^13750503444 is an apocalyptic number.

It is an amenable number.

13750503444 is an abundant number, since it is smaller than the sum of its proper divisors (21007713686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13750503444 is a wasteful number, since it uses less digits than its factorization.

13750503444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381958439 (or 381958434 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 13750503444 in words is "thirteen billion, seven hundred fifty million, five hundred three thousand, four hundred forty-four".