10640512123 has 16 divisors (see below), whose sum is σ = 10779310080. Its totient is φ = 10503022464.

The previous prime is 10640512121. The next prime is 10640512139. The reversal of 10640512123 is 32121504601.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10640512123 - 2¹ = 10640512121 is a prime.

It is a super-2 number, since 2×10640512123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10640512121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24573715 + ... + 24574147.

It is an arithmetic number, because the mean of its divisors is an integer number (673706880).

Almost surely, 2^10640512123 is an apocalyptic number.

10640512123 is a deficient number, since it is larger than the sum of its proper divisors (138797957).

10640512123 is a wasteful number, since it uses less digits than its factorization.

10640512123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 10640512123 in words is "ten billion, six hundred forty million, five hundred twelve thousand, one hundred twenty-three".