2641263540 has 24 divisors (see below), whose sum is σ = 7395538080. Its totient is φ = 704336928.

The previous prime is 2641263529. The next prime is 2641263571. The reversal of 2641263540 is 453621462.

2641263540 is nontrivially palindromic in base 9.

It is a congruent number.

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, 22010470 + ... + 22010589.

It is an arithmetic number, because the mean of its divisors is an integer number (308147420).

Almost surely, 2^2641263540 is an apocalyptic number.

2641263540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2641263540 is an abundant number, since it is smaller than the sum of its proper divisors (4754274540).

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

2641263540 is a wasteful number, since it uses less digits than its factorization.

2641263540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44021071 (or 44021069 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2641263540 is about 51393.2246507261. The cubic root of 2641263540 is about 1382.3051056870.

The spelling of 2641263540 in words is "two billion, six hundred forty-one million, two hundred sixty-three thousand, five hundred forty".