13618867712 has 40 divisors (see below), whose sum is σ = 28149481800. Its totient is φ = 6574618624.

The previous prime is 13618867697. The next prime is 13618867771. The reversal of 13618867712 is 21776881631.

It is a super-4 number, since 4×13618867712⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443762 + ... + 473457.

It is an arithmetic number, because the mean of its divisors is an integer number (703737045).

Almost surely, 2^13618867712 is an apocalyptic number.

It is an amenable number.

13618867712 is an abundant number, since it is smaller than the sum of its proper divisors (14530614088).

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

13618867712 is an frugal number, since it uses more digits than its factorization.

13618867712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917266 (or 917250 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The spelling of 13618867712 in words is "thirteen billion, six hundred eighteen million, eight hundred sixty-seven thousand, seven hundred twelve".