13958643712 has 62 divisors (see below), whose sum is σ = 30064771058. Its totient is φ = 6442450944.

The previous prime is 13958643709. The next prime is 13958643737. The reversal of 13958643712 is 21734685931.

It can be written as a sum of positive squares in only one way, i.e., 9663676416 + 4294967296 = 98304^2 + 65536^2 .

Its product of digits (1088640) is a multiple of the sum of its prime divisors (15).

It is a nialpdrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073741818 + ... + 1073741830.

Almost surely, 2^13958643712 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 13958643712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15032385529).

13958643712 is an abundant number, since it is smaller than the sum of its proper divisors (16106127346).

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

13958643712 is an frugal number, since it uses more digits than its factorization.

13958643712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 15 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The spelling of 13958643712 in words is "thirteen billion, nine hundred fifty-eight million, six hundred forty-three thousand, seven hundred twelve".