641146165340 has 48 divisors (see below), whose sum is σ = 1393375193280. Its totient is φ = 247518996480.

The previous prime is 641146165337. The next prime is 641146165357. The reversal of 641146165340 is 43561641146.

It is a happy number.

It is a super-2 number, since 2×641146165340² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1290785 + ... + 1717095.

It is an arithmetic number, because the mean of its divisors is an integer number (29028649860).

Almost surely, 2^641146165340 is an apocalyptic number.

It is an amenable number.

641146165340 is an abundant number, since it is smaller than the sum of its proper divisors (752229027940).

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

641146165340 is a wasteful number, since it uses less digits than its factorization.

641146165340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428942 (or 428940 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 641146165340 in words is "six hundred forty-one billion, one hundred forty-six million, one hundred sixty-five thousand, three hundred forty".