6641013312540 has 96 divisors (see below), whose sum is σ = 20668652746560. Its totient is φ = 1770274960128.

The previous prime is 6641013312529. The next prime is 6641013312553. The reversal of 6641013312540 is 452133101466.

6641013312540 is a `hidden beast` number, since 6 + 6 + 4 + 101 + 3 + 3 + 1 + 2 + 540 = 666.

It is a super-3 number, since 3×6641013312540³ (a number of 39 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6641013312495 and 6641013312504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 851427 + ... + 3742586.

It is an arithmetic number, because the mean of its divisors is an integer number (215298466110).

Almost surely, 2^{6641013312540} is an apocalyptic number.

6641013312540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6641013312540 is an abundant number, since it is smaller than the sum of its proper divisors (14027639434020).

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

6641013312540 is a wasteful number, since it uses less digits than its factorization.

6641013312540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596708 (or 4596700 counting only the distinct ones).

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

The spelling of 6641013312540 in words is "six trillion, six hundred forty-one billion, thirteen million, three hundred twelve thousand, five hundred forty".