10661304356220 has 48 divisors (see below), whose sum is σ = 34116173941248. Its totient is φ = 2436869567040.

The previous prime is 10661304356203. The next prime is 10661304356231. The reversal of 10661304356220 is 2265340316601.

It is a super-2 number, since 2×10661304356220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 12692028576 + ... + 12692029415.

It is an arithmetic number, because the mean of its divisors is an integer number (710753623776).

Almost surely, 2^{10661304356220} is an apocalyptic number.

10661304356220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10661304356220 is an abundant number, since it is smaller than the sum of its proper divisors (23454869585028).

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

10661304356220 is a wasteful number, since it uses less digits than its factorization.

10661304356220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25384058010 (or 25384058008 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 10661304356220 in words is "ten trillion, six hundred sixty-one billion, three hundred four million, three hundred fifty-six thousand, two hundred twenty".