15485681280 has 64 divisors (see below), whose sum is σ = 49360615200. Its totient is φ = 4129514496.

The previous prime is 15485681279. The next prime is 15485681297. The reversal of 15485681280 is 8218658451.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4030810 + ... + 4034649.

Almost surely, 2^15485681280 is an apocalyptic number.

15485681280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15485681280 is an abundant number, since it is smaller than the sum of its proper divisors (33874933920).

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

15485681280 is an equidigital number, since it uses as much as digits as its factorization.

15485681280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065481 (or 8065469 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 48.

The spelling of 15485681280 in words is "fifteen billion, four hundred eighty-five million, six hundred eighty-one thousand, two hundred eighty".