10730385640 has 32 divisors (see below), whose sum is σ = 26000551080. Its totient is φ = 3961988352.

The previous prime is 10730385623. The next prime is 10730385647. The reversal of 10730385640 is 4658303701.

It can be written as a sum of positive squares in 4 ways, for example, as 4305721924 + 6424663716 = 65618^2 + 80154^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10730385640.

It is not an unprimeable number, because it can be changed into a prime (10730385647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10317159 + ... + 10318198.

Almost surely, 2^10730385640 is an apocalyptic number.

10730385640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10730385640 is an abundant number, since it is smaller than the sum of its proper divisors (15270165440).

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

10730385640 is a wasteful number, since it uses less digits than its factorization.

10730385640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20635381 (or 20635377 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 10730385640 in words is "ten billion, seven hundred thirty million, three hundred eighty-five thousand, six hundred forty".