12207765387 has 8 divisors (see below), whose sum is σ = 16278064336. Its totient is φ = 8137988352.

The previous prime is 12207765377. The next prime is 12207765391. The reversal of 12207765387 is 78356770221.

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

It is not a de Polignac number, because 12207765387 - 2¹⁶ = 12207699851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12207765337) 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, 72178 + ... + 172119.

It is an arithmetic number, because the mean of its divisors is an integer number (2034758042).

Almost surely, 2^12207765387 is an apocalyptic number.

12207765387 is a deficient number, since it is larger than the sum of its proper divisors (4070298949).

12207765387 is a wasteful number, since it uses less digits than its factorization.

12207765387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260957.

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 12207765387 in words is "twelve billion, two hundred seven million, seven hundred sixty-five thousand, three hundred eighty-seven".