7121158844 has 6 divisors (see below), whose sum is σ = 12462027984. Its totient is φ = 3560579420.

The previous prime is 7121158843. The next prime is 7121158853. The reversal of 7121158844 is 4488511217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121158843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890144852 + ... + 890144859.

It is an arithmetic number, because the mean of its divisors is an integer number (2077004664).

Almost surely, 2^7121158844 is an apocalyptic number.

It is an amenable number.

7121158844 is a deficient number, since it is larger than the sum of its proper divisors (5340869140).

7121158844 is a wasteful number, since it uses less digits than its factorization.

7121158844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780289715 (or 1780289713 counting only the distinct ones).

The product of its digits is 71680, while the sum is 41.

The square root of 7121158844 is about 84386.9589687885. The cubic root of 7121158844 is about 1923.9047094862.

The spelling of 7121158844 in words is "seven billion, one hundred twenty-one million, one hundred fifty-eight thousand, eight hundred forty-four".