7872144412787 has 4 divisors (see below), whose sum is σ = 7872180893496. Its totient is φ = 7872107932080.

The previous prime is 7872144412753. The next prime is 7872144412903.

7872144412787 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7872144412787 - 2¹⁶ = 7872144347251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7872144412087) 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, 17914733 + ... + 18348894.

It is an arithmetic number, because the mean of its divisors is an integer number (1968045223374).

Almost surely, 2^{7872144412787} is an apocalyptic number.

7872144412787 is a deficient number, since it is larger than the sum of its proper divisors (36480709).

7872144412787 is a wasteful number, since it uses less digits than its factorization.

7872144412787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36480708.

The product of its digits is 39337984, while the sum is 62.

The spelling of 7872144412787 in words is "seven trillion, eight hundred seventy-two billion, one hundred forty-four million, four hundred twelve thousand, seven hundred eighty-seven".