6411421321618 has 16 divisors (see below), whose sum is σ = 10038353317056. Its totient is φ = 3065389248240.

The previous prime is 6411421321609. The next prime is 6411421321631. The reversal of 6411421321618 is 8161231241146.

It is a happy number.

It is a super-2 number, since 2×6411421321618² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21273468 + ... + 21572743.

It is an arithmetic number, because the mean of its divisors is an integer number (627397082316).

Almost surely, 2^{6411421321618} is an apocalyptic number.

6411421321618 is a deficient number, since it is larger than the sum of its proper divisors (3626931995438).

6411421321618 is a wasteful number, since it uses less digits than its factorization.

6411421321618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42849489.

The product of its digits is 55296, while the sum is 40.

The spelling of 6411421321618 in words is "six trillion, four hundred eleven billion, four hundred twenty-one million, three hundred twenty-one thousand, six hundred eighteen".