621105061060 has 96 divisors (see below), whose sum is σ = 1437528072960. Its totient is φ = 223535424000.

The previous prime is 621105061019. The next prime is 621105061091. The reversal of 621105061060 is 60160501126.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110141721 + ... + 110147359.

It is an arithmetic number, because the mean of its divisors is an integer number (14974250760).

Almost surely, 2^621105061060 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 621105061060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718764036480).

621105061060 is an abundant number, since it is smaller than the sum of its proper divisors (816423011900).

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

621105061060 is a wasteful number, since it uses less digits than its factorization.

621105061060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10717 (or 10715 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 621105061060 its reverse (60160501126), we get a palindrome (681265562186).

The spelling of 621105061060 in words is "six hundred twenty-one billion, one hundred five million, sixty-one thousand, sixty".