2640137650 has 48 divisors (see below), whose sum is σ = 5069791584. Its totient is φ = 1022273280.

The previous prime is 2640137611. The next prime is 2640137651. The reversal of 2640137650 is 567310462.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2640137651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237517 + ... + 248383.

It is an arithmetic number, because the mean of its divisors is an integer number (105620658).

Almost surely, 2^2640137650 is an apocalyptic number.

2640137650 is a deficient number, since it is larger than the sum of its proper divisors (2429653934).

2640137650 is a wasteful number, since it uses less digits than its factorization.

2640137650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11035 (or 11030 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 2640137650 is about 51382.2698019463. The cubic root of 2640137650 is about 1382.1086662857.

The spelling of 2640137650 in words is "two billion, six hundred forty million, one hundred thirty-seven thousand, six hundred fifty".