6411540366 has 128 divisors (see below), whose sum is σ = 17930833920. Its totient is φ = 1649656800.

The previous prime is 6411540341. The next prime is 6411540383. The reversal of 6411540366 is 6630451146.

It is a happy number.

6411540366 is a `hidden beast` number, since 641 + 1 + 5 + 4 + 0 + 3 + 6 + 6 = 666.

It is a super-2 number, since 2×6411540366² = 82215699729694827912, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6411540366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 437701 + ... + 452111.

It is an arithmetic number, because the mean of its divisors is an integer number (140084640).

Almost surely, 2^6411540366 is an apocalyptic number.

6411540366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6411540366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8965416960).

6411540366 is an abundant number, since it is smaller than the sum of its proper divisors (11519293554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6411540366 is a wasteful number, since it uses less digits than its factorization.

6411540366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14547 (or 14541 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6411540366 is about 80072.0948021219. The cubic root of 6411540366 is about 1857.7508140696.

The spelling of 6411540366 in words is "six billion, four hundred eleven million, five hundred forty thousand, three hundred sixty-six".