13985147787 has 8 divisors (see below), whose sum is σ = 20081237904. Its totient is φ = 8606244768.

The previous prime is 13985147753. The next prime is 13985147807. The reversal of 13985147787 is 78774158931.

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

It is not a de Polignac number, because 13985147787 - 2¹¹ = 13985145739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13985147787.

It is not an unprimeable number, because it can be changed into a prime (13985140787) 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, 179296728 + ... + 179296805.

It is an arithmetic number, because the mean of its divisors is an integer number (2510154738).

Almost surely, 2^13985147787 is an apocalyptic number.

13985147787 is a deficient number, since it is larger than the sum of its proper divisors (6096090117).

13985147787 is a wasteful number, since it uses less digits than its factorization.

13985147787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358593549.

The product of its digits is 11854080, while the sum is 60.

The spelling of 13985147787 in words is "thirteen billion, nine hundred eighty-five million, one hundred forty-seven thousand, seven hundred eighty-seven".