13001686477 has 16 divisors (see below), whose sum is σ = 14128213680. Its totient is φ = 11893519872.

The previous prime is 13001686463. The next prime is 13001686517. The reversal of 13001686477 is 77468610031.

It can be written as a sum of positive squares in 8 ways, for example, as 4130118756 + 8871567721 = 64266^2 + 94189^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13001686477 is a prime.

It is a super-3 number, since 3×13001686477³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001686427) 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, 1085799 + ... + 1097707.

It is an arithmetic number, because the mean of its divisors is an integer number (883013355).

Almost surely, 2^13001686477 is an apocalyptic number.

It is an amenable number.

13001686477 is a deficient number, since it is larger than the sum of its proper divisors (1126527203).

13001686477 is a wasteful number, since it uses less digits than its factorization.

13001686477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 13001686477 in words is "thirteen billion, one million, six hundred eighty-six thousand, four hundred seventy-seven".