641062446361 has 4 divisors (see below), whose sum is σ = 641298916224. Its totient is φ = 640825976500.

The previous prime is 641062446317. The next prime is 641062446379. The reversal of 641062446361 is 163644260146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163644260146 = 2 ⋅81822130073.

It is a cyclic number.

It is not a de Polignac number, because 641062446361 - 2¹¹ = 641062444313 is a prime.

It is a super-2 number, since 2×641062446361² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641062446061) 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, 118230865 + ... + 118236286.

It is an arithmetic number, because the mean of its divisors is an integer number (160324729056).

Almost surely, 2^641062446361 is an apocalyptic number.

It is an amenable number.

641062446361 is a deficient number, since it is larger than the sum of its proper divisors (236469863).

641062446361 is a wasteful number, since it uses less digits than its factorization.

641062446361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236469862.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 641062446361 in words is "six hundred forty-one billion, sixty-two million, four hundred forty-six thousand, three hundred sixty-one".