10640432140 has 48 divisors (see below), whose sum is σ = 24422946912. Its totient is φ = 3870130176.

The previous prime is 10640432123. The next prime is 10640432167. The reversal of 10640432140 is 4123404601.

It is a super-2 number, since 2×10640432140² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287989 + ... + 322828.

It is an arithmetic number, because the mean of its divisors is an integer number (508811394).

Almost surely, 2^10640432140 is an apocalyptic number.

10640432140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10640432140 is an abundant number, since it is smaller than the sum of its proper divisors (13782514772).

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

10640432140 is a wasteful number, since it uses less digits than its factorization.

10640432140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610906 (or 610904 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 10640432140 its reverse (4123404601), we get a palindrome (14763836741).

The spelling of 10640432140 in words is "ten billion, six hundred forty million, four hundred thirty-two thousand, one hundred forty".