7021621168 has 10 divisors (see below), whose sum is σ = 13604391044. Its totient is φ = 3510810576.

The previous prime is 7021621141. The next prime is 7021621169. The reversal of 7021621168 is 8611261207.

It is not an unprimeable number, because it can be changed into a prime (7021621169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219425646 + ... + 219425677.

Almost surely, 2^7021621168 is an apocalyptic number.

It is an amenable number.

7021621168 is a deficient number, since it is larger than the sum of its proper divisors (6582769876).

7021621168 is a wasteful number, since it uses less digits than its factorization.

7021621168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438851331 (or 438851325 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 7021621168 is about 83795.1142251146. The cubic root of 7021621168 is about 1914.8986730672.

The spelling of 7021621168 in words is "seven billion, twenty-one million, six hundred twenty-one thousand, one hundred sixty-eight".