10640740490 has 16 divisors (see below), whose sum is σ = 19159194600. Its totient is φ = 4254993600.

The previous prime is 10640740477. The next prime is 10640740499. The reversal of 10640740490 is 9404704601.

It can be written as a sum of positive squares in 4 ways, for example, as 8850858241 + 1789882249 = 94079^2 + 42307^2 .

It is a super-2 number, since 2×10640740490² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10640740490.

It is not an unprimeable number, because it can be changed into a prime (10640740499) 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, 128165 + ... + 194184.

Almost surely, 2^10640740490 is an apocalyptic number.

10640740490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10640740490 is a deficient number, since it is larger than the sum of its proper divisors (8518454110).

10640740490 is a wasteful number, since it uses less digits than its factorization.

10640740490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325657.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 10640740490 in words is "ten billion, six hundred forty million, seven hundred forty thousand, four hundred ninety".