13734620639 has 4 divisors (see below), whose sum is σ = 13735162056. Its totient is φ = 13734079224.

The previous prime is 13734620629. The next prime is 13734620651. The reversal of 13734620639 is 93602643731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13734620639 - 2⁴ = 13734620623 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 13734620639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13734620629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230684 + ... + 284049.

It is an arithmetic number, because the mean of its divisors is an integer number (3433790514).

Almost surely, 2^13734620639 is an apocalyptic number.

13734620639 is a deficient number, since it is larger than the sum of its proper divisors (541417).

13734620639 is an equidigital number, since it uses as much as digits as its factorization.

13734620639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541416.

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 13734620639 in words is "thirteen billion, seven hundred thirty-four million, six hundred twenty thousand, six hundred thirty-nine".