13898558516 has 18 divisors (see below), whose sum is σ = 24357166470. Its totient is φ = 6939381952.

The previous prime is 13898558503. The next prime is 13898558581. The reversal of 13898558516 is 61585589831.

13898558516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2751422116 + 11147136400 = 52454^2 + 105580^2 .

It is a super-2 number, since 2×13898558516² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2615270 + ... + 2620578.

It is an arithmetic number, because the mean of its divisors is an integer number (1353175915).

Almost surely, 2^13898558516 is an apocalyptic number.

It is an amenable number.

13898558516 is a deficient number, since it is larger than the sum of its proper divisors (10458607954).

13898558516 is an frugal number, since it uses more digits than its factorization.

13898558516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931 (or 6120 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 59.

The spelling of 13898558516 in words is "thirteen billion, eight hundred ninety-eight million, five hundred fifty-eight thousand, five hundred sixteen".