13994545540 has 12 divisors (see below), whose sum is σ = 29388545676. Its totient is φ = 5597818208.

The previous prime is 13994545517. The next prime is 13994545547. The reversal of 13994545540 is 4554549931.

It can be written as a sum of positive squares in 2 ways, for example, as 2704208004 + 11290337536 = 52002^2 + 106256^2 .

It is a super-2 number, since 2×13994545540² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13994545547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349863619 + ... + 349863658.

It is an arithmetic number, because the mean of its divisors is an integer number (2449045473).

Almost surely, 2^13994545540 is an apocalyptic number.

13994545540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13994545540 is an abundant number, since it is smaller than the sum of its proper divisors (15394000136).

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

13994545540 is a wasteful number, since it uses less digits than its factorization.

13994545540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699727286 (or 699727284 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 13994545540 in words is "thirteen billion, nine hundred ninety-four million, five hundred forty-five thousand, five hundred forty".