13773137984 has 56 divisors (see below), whose sum is σ = 27896122008. Its totient is φ = 6744657920.

The previous prime is 13773137971. The next prime is 13773137993. The reversal of 13773137984 is 48973137731.

It can be written as a sum of positive squares in 4 ways, for example, as 54169600 + 13718968384 = 7360^2 + 117128^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

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, 2089574 + ... + 2096154.

Almost surely, 2^13773137984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13773137984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13948061004).

13773137984 is an abundant number, since it is smaller than the sum of its proper divisors (14122984024).

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

13773137984 is an equidigital number, since it uses as much as digits as its factorization.

13773137984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7263 (or 7253 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 53.

The spelling of 13773137984 in words is "thirteen billion, seven hundred seventy-three million, one hundred thirty-seven thousand, nine hundred eighty-four".