641165610016 has 24 divisors (see below), whose sum is σ = 1266276817260. Its totient is φ = 319571497728.

The previous prime is 641165609993. The next prime is 641165610017. The reversal of 641165610016 is 610016561146.

It can be written as a sum of positive squares in 2 ways, for example, as 639686438416 + 1479171600 = 799804^2 + 38460^2 .

It is a super-2 number, since 2×641165610016² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641165610017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31593051 + ... + 31613338.

Almost surely, 2^641165610016 is an apocalyptic number.

It is an amenable number.

641165610016 is a deficient number, since it is larger than the sum of its proper divisors (625111207244).

641165610016 is a wasteful number, since it uses less digits than its factorization.

641165610016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63206716 (or 63206708 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 641165610016 in words is "six hundred forty-one billion, one hundred sixty-five million, six hundred ten thousand, sixteen".