10661435323645 has 32 divisors (see below), whose sum is σ = 13062569287680. Its totient is φ = 8352289935360.

The previous prime is 10661435323619. The next prime is 10661435323657. The reversal of 10661435323645 is 54632353416601.

It is not a de Polignac number, because 10661435323645 - 2¹¹ = 10661435321597 is a prime.

It is a super-2 number, since 2×10661435323645² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16984696 + ... + 17601214.

It is an arithmetic number, because the mean of its divisors is an integer number (408205290240).

Almost surely, 2^{10661435323645} is an apocalyptic number.

It is an amenable number.

10661435323645 is a deficient number, since it is larger than the sum of its proper divisors (2401133964035).

10661435323645 is a wasteful number, since it uses less digits than its factorization.

10661435323645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617005.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 10661435323645 in words is "ten trillion, six hundred sixty-one billion, four hundred thirty-five million, three hundred twenty-three thousand, six hundred forty-five".