10280650640 has 40 divisors (see below), whose sum is σ = 25741170168. Its totient is φ = 3795932160.

The previous prime is 10280650637. The next prime is 10280650661. The reversal of 10280650640 is 4605608201.

It can be written as a sum of positive squares in 4 ways, for example, as 161900176 + 10118750464 = 12724^2 + 100592^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 10280650597 and 10280650606.

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, 4941581 + ... + 4943660.

Almost surely, 2^10280650640 is an apocalyptic number.

10280650640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10280650640 is an abundant number, since it is smaller than the sum of its proper divisors (15460519528).

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

10280650640 is a wasteful number, since it uses less digits than its factorization.

10280650640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9885267 (or 9885261 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 10280650640 in words is "ten billion, two hundred eighty million, six hundred fifty thousand, six hundred forty".