7121863797 has 8 divisors (see below), whose sum is σ = 9552680256. Its totient is φ = 4719478272.

The previous prime is 7121863781. The next prime is 7121863829. The reversal of 7121863797 is 7973681217.

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

It is not a de Polignac number, because 7121863797 - 2⁴ = 7121863781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121863097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7107148 + ... + 7108149.

It is an arithmetic number, because the mean of its divisors is an integer number (1194085032).

Almost surely, 2^7121863797 is an apocalyptic number.

It is an amenable number.

7121863797 is a deficient number, since it is larger than the sum of its proper divisors (2430816459).

7121863797 is a wasteful number, since it uses less digits than its factorization.

7121863797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14215467.

The product of its digits is 889056, while the sum is 51.

The square root of 7121863797 is about 84391.1357726628. The cubic root of 7121863797 is about 1923.9681924893.

The spelling of 7121863797 in words is "seven billion, one hundred twenty-one million, eight hundred sixty-three thousand, seven hundred ninety-seven".