641411000021 has 8 divisors (see below), whose sum is σ = 718632472224. Its totient is φ = 567341424720.

The previous prime is 641411000011. The next prime is 641411000023. The reversal of 641411000021 is 120000114146.

641411000021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641411000021 - 2³⁴ = 624231130837 is a prime.

It is a super-2 number, since 2×641411000021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 641410999957 and 641411000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641411000023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787973795 + ... + 787974608.

It is an arithmetic number, because the mean of its divisors is an integer number (89829059028).

Almost surely, 2^641411000021 is an apocalyptic number.

It is an amenable number.

641411000021 is a deficient number, since it is larger than the sum of its proper divisors (77221472203).

641411000021 is a wasteful number, since it uses less digits than its factorization.

641411000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575948451.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 641411000021 its reverse (120000114146), we get a palindrome (761411114167).

The spelling of 641411000021 in words is "six hundred forty-one billion, four hundred eleven million, twenty-one", and thus it is an aban number.