621241632350646 has 8 divisors (see below), whose sum is σ = 1242483264701304. Its totient is φ = 207080544116880.

The previous prime is 621241632350639. The next prime is 621241632350701. The reversal of 621241632350646 is 646053236142126.

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

621241632350646 is an admirable number.

It is a super-2 number, since 2×621241632350646² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51770136029215 + ... + 51770136029226.

It is an arithmetic number, because the mean of its divisors is an integer number (155310408087663).

Almost surely, 2^{621241632350646} is an apocalyptic number.

621241632350646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

621241632350646 is a wasteful number, since it uses less digits than its factorization.

621241632350646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103540272058446.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 621241632350646 in words is "six hundred twenty-one trillion, two hundred forty-one billion, six hundred thirty-two million, three hundred fifty thousand, six hundred forty-six".