2640501650 has 24 divisors (see below), whose sum is σ = 4922313300. Its totient is φ = 1053839360.

The previous prime is 2640501613. The next prime is 2640501653. The reversal of 2640501650 is 561050462.

It can be written as a sum of positive squares in 6 ways, for example, as 250367329 + 2390134321 = 15823^2 + 48889^2 .

It is not an unprimeable number, because it can be changed into a prime (2640501653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36359 + ... + 81258.

Almost surely, 2^2640501650 is an apocalyptic number.

2640501650 is a deficient number, since it is larger than the sum of its proper divisors (2281811650).

2640501650 is a wasteful number, since it uses less digits than its factorization.

2640501650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118078 (or 118073 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2640501650 is about 51385.8117577216. The cubic root of 2640501650 is about 1382.1721812109.

The spelling of 2640501650 in words is "two billion, six hundred forty million, five hundred one thousand, six hundred fifty".