629434220544 has 228 divisors, whose sum is σ = 1825525391040. Its totient is φ = 208986439680.

The previous prime is 629434220539. The next prime is 629434220581. The reversal of 629434220544 is 445022434926.

629434220544 is a `hidden beast` number, since 6 + 2 + 9 + 43 + 42 + 20 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 629434220544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016856267 + ... + 1016856885.

Almost surely, 2^629434220544 is an apocalyptic number.

629434220544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 629434220544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912762695520).

629434220544 is an abundant number, since it is smaller than the sum of its proper divisors (1196091170496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

629434220544 is an frugal number, since it uses more digits than its factorization.

629434220544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 629434220544 in words is "six hundred twenty-nine billion, four hundred thirty-four million, two hundred twenty thousand, five hundred forty-four".