641242472277220 has 48 divisors (see below), whose sum is σ = 1470547370210688. Its totient is φ = 232937944162560.

The previous prime is 641242472277193. The next prime is 641242472277223. The reversal of 641242472277220 is 22772274242146.

It is a super-2 number, since 2×641242472277220² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641242472277223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1506890937 + ... + 1507316416.

It is an arithmetic number, because the mean of its divisors is an integer number (30636403546056).

Almost surely, 2^{641242472277220} is an apocalyptic number.

It is an amenable number.

641242472277220 is an abundant number, since it is smaller than the sum of its proper divisors (829304897933468).

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

641242472277220 is a wasteful number, since it uses less digits than its factorization.

641242472277220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014208340 (or 3014208338 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 52.

The spelling of 641242472277220 in words is "six hundred forty-one trillion, two hundred forty-two billion, four hundred seventy-two million, two hundred seventy-seven thousand, two hundred twenty".