10500656006505 has 32 divisors (see below), whose sum is σ = 19328359845888. Its totient is φ = 4768509816000.

The previous prime is 10500656006501. The next prime is 10500656006543. The reversal of 10500656006505 is 50560065600501.

It is not a de Polignac number, because 10500656006505 - 2² = 10500656006501 is a prime.

It is a super-3 number, since 3×10500656006505³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (10500656006501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331130661 + ... + 331162370.

It is an arithmetic number, because the mean of its divisors is an integer number (604011245184).

Almost surely, 2^{10500656006505} is an apocalyptic number.

10500656006505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10500656006505 is a deficient number, since it is larger than the sum of its proper divisors (8827703839383).

10500656006505 is a wasteful number, since it uses less digits than its factorization.

10500656006505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662293197.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 10500656006505 in words is "ten trillion, five hundred billion, six hundred fifty-six million, six thousand, five hundred five".