2640803633 has 12 divisors (see below), whose sum is σ = 2863513728. Its totient is φ = 2434302000.

The previous prime is 2640803629. The next prime is 2640803651. The reversal of 2640803633 is 3363080462.

It is not a de Polignac number, because 2640803633 - 2² = 2640803629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2640803593 and 2640803602.

It is not an unprimeable number, because it can be changed into a prime (2640803663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116516 + ... + 137322.

It is an arithmetic number, because the mean of its divisors is an integer number (238626144).

Almost surely, 2^2640803633 is an apocalyptic number.

It is an amenable number.

2640803633 is a deficient number, since it is larger than the sum of its proper divisors (222710095).

2640803633 is a wasteful number, since it uses less digits than its factorization.

2640803633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21584 (or 21571 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 2640803633 is about 51388.7500626353. The cubic root of 2640803633 is about 1382.2248702635.

The spelling of 2640803633 in words is "two billion, six hundred forty million, eight hundred three thousand, six hundred thirty-three".