13849997570640 has 2160 divisors, whose sum is σ = 62882977981824. Its totient is φ = 2672755937280.

The previous prime is 13849997570627. The next prime is 13849997570641. The reversal of 13849997570640 is 4607579994831.

13849997570640 is a `hidden beast` number, since 1 + 3 + 8 + 4 + 9 + 9 + 9 + 7 + 570 + 6 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13849997570641) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 11668068127 + ... + 11668069313.

Almost surely, 2^{13849997570640} is an apocalyptic number.

13849997570640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13849997570640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31441488990912).

13849997570640 is an abundant number, since it is smaller than the sum of its proper divisors (49032980411184).

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

13849997570640 is a wasteful number, since it uses less digits than its factorization.

13849997570640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 411505920, while the sum is 72.

The spelling of 13849997570640 in words is "thirteen trillion, eight hundred forty-nine billion, nine hundred ninety-seven million, five hundred seventy thousand, six hundred forty".