13840664284464 has 160 divisors (see below), whose sum is σ = 38031182705664. Its totient is φ = 4328263188480.

The previous prime is 13840664284451. The next prime is 13840664284481. The reversal of 13840664284464 is 46448246604831.

It is a super-2 number, since 2×13840664284464² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13840664284398 and 13840664284407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14670664 + ... + 15585560.

Almost surely, 2^{13840664284464} 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 13840664284464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19015591352832).

13840664284464 is an abundant number, since it is smaller than the sum of its proper divisors (24190518421200).

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

13840664284464 is a wasteful number, since it uses less digits than its factorization.

13840664284464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915195 (or 915189 counting only the distinct ones).

The product of its (nonzero) digits is 84934656, while the sum is 60.

The spelling of 13840664284464 in words is "thirteen trillion, eight hundred forty billion, six hundred sixty-four million, two hundred eighty-four thousand, four hundred sixty-four".