13780644701 has 4 divisors (see below), whose sum is σ = 13914437472. Its totient is φ = 13646851932.

The previous prime is 13780644679. The next prime is 13780644707. The reversal of 13780644701 is 10744608731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13780644701 - 2¹⁸ = 13780382557 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 (13780644707) 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, 66896231 + ... + 66896436.

It is an arithmetic number, because the mean of its divisors is an integer number (3478609368).

Almost surely, 2^13780644701 is an apocalyptic number.

It is an amenable number.

13780644701 is a deficient number, since it is larger than the sum of its proper divisors (133792771).

13780644701 is a wasteful number, since it uses less digits than its factorization.

13780644701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133792770.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 13780644701 in words is "thirteen billion, seven hundred eighty million, six hundred forty-four thousand, seven hundred one".