10661520652 has 6 divisors (see below), whose sum is σ = 18657661148. Its totient is φ = 5330760324.

The previous prime is 10661520643. The next prime is 10661520677. The reversal of 10661520652 is 25602516601.

It is a super-2 number, since 2×10661520652² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1332690078 + ... + 1332690085.

Almost surely, 2^10661520652 is an apocalyptic number.

It is an amenable number.

10661520652 is a deficient number, since it is larger than the sum of its proper divisors (7996140496).

10661520652 is a wasteful number, since it uses less digits than its factorization.

10661520652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665380167 (or 2665380165 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 10661520652 in words is "ten billion, six hundred sixty-one million, five hundred twenty thousand, six hundred fifty-two".