7872411641 has 4 divisors (see below), whose sum is σ = 8214690432. Its totient is φ = 7530132852.

The previous prime is 7872411571. The next prime is 7872411649. The reversal of 7872411641 is 1461142787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1461142787 = 13 ⋅112395599.

It is a cyclic number.

It is not a de Polignac number, because 7872411641 - 2¹⁴ = 7872395257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7872411649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171139361 + ... + 171139406.

It is an arithmetic number, because the mean of its divisors is an integer number (2053672608).

Almost surely, 2^7872411641 is an apocalyptic number.

It is an amenable number.

7872411641 is a deficient number, since it is larger than the sum of its proper divisors (342278791).

7872411641 is a wasteful number, since it uses less digits than its factorization.

7872411641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342278790.

The product of its digits is 75264, while the sum is 41.

The square root of 7872411641 is about 88726.6117971378. The cubic root of 7872411641 is about 1989.3106069720.

The spelling of 7872411641 in words is "seven billion, eight hundred seventy-two million, four hundred eleven thousand, six hundred forty-one".