629378069221 has 8 divisors (see below), whose sum is σ = 690429981600. Its totient is φ = 568965444240.

The previous prime is 629378069213. The next prime is 629378069233. The reversal of 629378069221 is 122960873926.

629378069221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 629378069221 - 2³ = 629378069213 is a prime.

It is a super-2 number, since 2×629378069221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629378069321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159819786 + ... + 159823723.

It is an arithmetic number, because the mean of its divisors is an integer number (86303747700).

Almost surely, 2^629378069221 is an apocalyptic number.

It is an amenable number.

629378069221 is a deficient number, since it is larger than the sum of its proper divisors (61051912379).

629378069221 is a wasteful number, since it uses less digits than its factorization.

629378069221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319643699.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 629378069221 in words is "six hundred twenty-nine billion, three hundred seventy-eight million, sixty-nine thousand, two hundred twenty-one".