8121726722 has 8 divisors (see below), whose sum is σ = 12206811456. Its totient is φ = 4052789572.

The previous prime is 8121726661. The next prime is 8121726733. The reversal of 8121726722 is 2276271218.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4035638 + ... + 4037649.

It is an arithmetic number, because the mean of its divisors is an integer number (1525851432).

Almost surely, 2^8121726722 is an apocalyptic number.

8121726722 is a deficient number, since it is larger than the sum of its proper divisors (4085084734).

8121726722 is a wasteful number, since it uses less digits than its factorization.

8121726722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8073792.

The product of its digits is 37632, while the sum is 38.

The square root of 8121726722 is about 90120.6231780495. The cubic root of 8121726722 is about 2010.0928747627.

The spelling of 8121726722 in words is "eight billion, one hundred twenty-one million, seven hundred twenty-six thousand, seven hundred twenty-two".