11672378565 has 16 divisors (see below), whose sum is σ = 18697618368. Its totient is φ = 6217997696.

The previous prime is 11672378527. The next prime is 11672378573. The reversal of 11672378565 is 56587327611.

It is a cyclic number.

It is not a de Polignac number, because 11672378565 - 2¹³ = 11672370373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441147 + ... + 466856.

It is an arithmetic number, because the mean of its divisors is an integer number (1168601148).

Almost surely, 2^11672378565 is an apocalyptic number.

11672378565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11672378565 is a deficient number, since it is larger than the sum of its proper divisors (7025239803).

11672378565 is an equidigital number, since it uses as much as digits as its factorization.

11672378565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908868.

The product of its digits is 2116800, while the sum is 51.

It can be divided in two parts, 1167 and 2378565, that added together give a palindrome (2379732).

The spelling of 11672378565 in words is "eleven billion, six hundred seventy-two million, three hundred seventy-eight thousand, five hundred sixty-five".