13857486720 has 512 divisors, whose sum is σ = 55931904000. Its totient is φ = 2834472960.

The previous prime is 13857486703. The next prime is 13857486737. The reversal of 13857486720 is 2768475831.

It is an interprime number because it is at equal distance from previous prime (13857486703) and next prime (13857486737).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9904581 + ... + 9905979.

It is an arithmetic number, because the mean of its divisors is an integer number (109242000).

Almost surely, 2^13857486720 is an apocalyptic number.

13857486720 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 13857486720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27965952000).

13857486720 is an abundant number, since it is smaller than the sum of its proper divisors (42074417280).

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

13857486720 is a wasteful number, since it uses less digits than its factorization.

13857486720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 13857486720 in words is "thirteen billion, eight hundred fifty-seven million, four hundred eighty-six thousand, seven hundred twenty".