13781564383 has 8 divisors (see below), whose sum is σ = 14467253760. Its totient is φ = 13110945240.

The previous prime is 13781564359. The next prime is 13781564387. The reversal of 13781564383 is 38346518731.

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

It is a cyclic number.

It is not a de Polignac number, because 13781564383 - 2²¹ = 13779467231 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 (13781564387) 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, 3765685 + ... + 3769342.

It is an arithmetic number, because the mean of its divisors is an integer number (1808406720).

Almost surely, 2^13781564383 is an apocalyptic number.

13781564383 is a deficient number, since it is larger than the sum of its proper divisors (685689377).

13781564383 is an equidigital number, since it uses as much as digits as its factorization.

13781564383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535117.

The product of its digits is 1451520, while the sum is 49.

The spelling of 13781564383 in words is "thirteen billion, seven hundred eighty-one million, five hundred sixty-four thousand, three hundred eighty-three".