2661541140264 has 32 divisors (see below), whose sum is σ = 6653924413440. Its totient is φ = 887170838400.

The previous prime is 2661541140257. The next prime is 2661541140281. The reversal of 2661541140264 is 4620411451662.

It is a happy number.

2661541140264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1893849 + ... + 2984919.

It is an arithmetic number, because the mean of its divisors is an integer number (207935137920).

Almost surely, 2^{2661541140264} is an apocalyptic number.

2661541140264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2661541140264 is an abundant number, since it is smaller than the sum of its proper divisors (3992383273176).

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

2661541140264 is a wasteful number, since it uses less digits than its factorization.

2661541140264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192721 (or 1192717 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 2661541140264 in words is "two trillion, six hundred sixty-one billion, five hundred forty-one million, one hundred forty thousand, two hundred sixty-four".