13487454720 has 160 divisors (see below), whose sum is σ = 47908808640. Its totient is φ = 3596636160.

The previous prime is 13487454719. The next prime is 13487454727. The reversal of 13487454720 is 2745478431.

13487454720 is a `hidden beast` number, since 1 + 3 + 4 + 87 + 4 + 547 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×13487454720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (13487454727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28446 + ... + 166685.

It is an arithmetic number, because the mean of its divisors is an integer number (299430054).

Almost surely, 2^13487454720 is an apocalyptic number.

13487454720 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 13487454720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23954404320).

13487454720 is an abundant number, since it is smaller than the sum of its proper divisors (34421353920).

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

13487454720 is an equidigital number, since it uses as much as digits as its factorization.

13487454720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195163 (or 195141 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 13487454720 in words is "thirteen billion, four hundred eighty-seven million, four hundred fifty-four thousand, seven hundred twenty".