2641533660 has 48 divisors (see below), whose sum is σ = 8218106400. Its totient is φ = 704408832.

The previous prime is 2641533659. The next prime is 2641533673. The reversal of 2641533660 is 663351462.

2641533660 is a `hidden beast` number, since 2 + 64 + 1 + 533 + 6 + 60 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2445325 + ... + 2446404.

It is an arithmetic number, because the mean of its divisors is an integer number (171210550).

Almost surely, 2^2641533660 is an apocalyptic number.

2641533660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2641533660 is an abundant number, since it is smaller than the sum of its proper divisors (5576572740).

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

2641533660 is a wasteful number, since it uses less digits than its factorization.

2641533660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891747 (or 4891739 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 2641533660 is about 51395.8525564077. The cubic root of 2641533660 is about 1382.3522265090.

The spelling of 2641533660 in words is "two billion, six hundred forty-one million, five hundred thirty-three thousand, six hundred sixty".