622161663552 has 672 divisors, whose sum is σ = 2231694052224. Its totient is φ = 169305292800.

The previous prime is 622161663533. The next prime is 622161663559. The reversal of 622161663552 is 255366161226.

622161663552 is a `hidden beast` number, since 6 + 2 + 2 + 1 + 6 + 1 + 6 + 635 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 622161663498 and 622161663507.

It is not an unprimeable number, because it can be changed into a prime (622161663559) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 82281852 + ... + 82289412.

It is an arithmetic number, because the mean of its divisors is an integer number (3320973292).

Almost surely, 2^622161663552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622161663552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115847026112).

622161663552 is an abundant number, since it is smaller than the sum of its proper divisors (1609532388672).

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

622161663552 is a wasteful number, since it uses less digits than its factorization.

622161663552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649 (or 7627 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 622161663552 in words is "six hundred twenty-two billion, one hundred sixty-one million, six hundred sixty-three thousand, five hundred fifty-two".