10644815680551 has 32 divisors (see below), whose sum is σ = 17261594562240. Its totient is φ = 6443267990400.

The previous prime is 10644815680531. The next prime is 10644815680613. The reversal of 10644815680551 is 15508651844601.

It is a happy number.

10644815680551 is a `hidden beast` number, since 1 + 0 + 6 + 4 + 4 + 8 + 1 + 5 + 6 + 80 + 551 = 666.

It is not a de Polignac number, because 10644815680551 - 2⁶ = 10644815680487 is a prime.

It is a super-2 number, since 2×10644815680551² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644815680531) 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, 248561460 + ... + 248604281.

It is an arithmetic number, because the mean of its divisors is an integer number (539424830070).

Almost surely, 2^{10644815680551} is an apocalyptic number.

10644815680551 is a deficient number, since it is larger than the sum of its proper divisors (6616778881689).

10644815680551 is a wasteful number, since it uses less digits than its factorization.

10644815680551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497165824 (or 497165818 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 10644815680551 in words is "ten trillion, six hundred forty-four billion, eight hundred fifteen million, six hundred eighty thousand, five hundred fifty-one".