13438636937477 has 8 divisors (see below), whose sum is σ = 14022981680064. Its totient is φ = 12854296876608.

The previous prime is 13438636937441. The next prime is 13438636937489. The reversal of 13438636937477 is 77473963683431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13438636937477 - 2¹⁶ = 13438636871941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13438636937477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438636937437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5505533 + ... + 7562285.

It is an arithmetic number, because the mean of its divisors is an integer number (1752872710008).

Almost surely, 2^{13438636937477} is an apocalyptic number.

It is an amenable number.

13438636937477 is a deficient number, since it is larger than the sum of its proper divisors (584344742587).

13438636937477 is a wasteful number, since it uses less digits than its factorization.

13438636937477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340859.

The product of its digits is 1152216576, while the sum is 71.

The spelling of 13438636937477 in words is "thirteen trillion, four hundred thirty-eight billion, six hundred thirty-six million, nine hundred thirty-seven thousand, four hundred seventy-seven".