13471520647 has 32 divisors (see below), whose sum is σ = 16094453760. Its totient is φ = 11149248000.

The previous prime is 13471520639. The next prime is 13471520651. The reversal of 13471520647 is 74602517431.

It is a cyclic number.

It is not a de Polignac number, because 13471520647 - 2³ = 13471520639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13471520627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1270554 + ... + 1281112.

It is an arithmetic number, because the mean of its divisors is an integer number (502951680).

Almost surely, 2^13471520647 is an apocalyptic number.

13471520647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13471520647 is a deficient number, since it is larger than the sum of its proper divisors (2622933113).

13471520647 is a wasteful number, since it uses less digits than its factorization.

13471520647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10863.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 13471520647 in words is "thirteen billion, four hundred seventy-one million, five hundred twenty thousand, six hundred forty-seven".