7872222787 has 16 divisors (see below), whose sum is σ = 9275196672. Its totient is φ = 6586981920.

The previous prime is 7872222781. The next prime is 7872222803.

7872222787 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7872222787 - 2²⁷ = 7738005059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7872222781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29703 + ... + 128944.

It is an arithmetic number, because the mean of its divisors is an integer number (579699792).

Almost surely, 2^7872222787 is an apocalyptic number.

7872222787 is a deficient number, since it is larger than the sum of its proper divisors (1402973885).

7872222787 is a wasteful number, since it uses less digits than its factorization.

7872222787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159018.

The product of its digits is 2458624, while the sum is 52.

The square root of 7872222787 is about 88725.5475440980. The cubic root of 7872222787 is about 1989.2946994252.

The spelling of 7872222787 in words is "seven billion, eight hundred seventy-two million, two hundred twenty-two thousand, seven hundred eighty-seven".