6411651643 has 4 divisors (see below), whose sum is σ = 6788807640. Its totient is φ = 6034495648.

The previous prime is 6411651641. The next prime is 6411651667. The reversal of 6411651643 is 3461561146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6411651643 - 2¹ = 6411651641 is a prime.

It is a super-2 number, since 2×6411651643² = 82218553582369198898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6411651641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 188577973 + ... + 188578006.

It is an arithmetic number, because the mean of its divisors is an integer number (1697201910).

Almost surely, 2^6411651643 is an apocalyptic number.

6411651643 is a deficient number, since it is larger than the sum of its proper divisors (377155997).

6411651643 is a wasteful number, since it uses less digits than its factorization.

6411651643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377155996.

The product of its digits is 51840, while the sum is 37.

The square root of 6411651643 is about 80072.7896541640. The cubic root of 6411651643 is about 1857.7615615515.

The spelling of 6411651643 in words is "six billion, four hundred eleven million, six hundred fifty-one thousand, six hundred forty-three".