641355251622 has 16 divisors (see below), whose sum is σ = 1283681533872. Its totient is φ = 213623245440.

The previous prime is 641355251617. The next prime is 641355251731. The reversal of 641355251622 is 226152553146.

It is a super-2 number, since 2×641355251622² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40451023 + ... + 40466874.

It is an arithmetic number, because the mean of its divisors is an integer number (80230095867).

Almost surely, 2^641355251622 is an apocalyptic number.

641355251622 is an abundant number, since it is smaller than the sum of its proper divisors (642326282250).

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

641355251622 is a wasteful number, since it uses less digits than its factorization.

641355251622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80919223.

The product of its digits is 432000, while the sum is 42.

The spelling of 641355251622 in words is "six hundred forty-one billion, three hundred fifty-five million, two hundred fifty-one thousand, six hundred twenty-two".