10660016521 has 8 divisors (see below), whose sum is σ = 13290410304. Its totient is φ = 8306506320.

The previous prime is 10660016513. The next prime is 10660016551. The reversal of 10660016521 is 12561006601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10660016521 - 2³ = 10660016513 is a prime.

It is a super-2 number, since 2×10660016521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10660016521.

It is not an unprimeable number, because it can be changed into a prime (10660016501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69220810 + ... + 69220963.

It is an arithmetic number, because the mean of its divisors is an integer number (1661301288).

Almost surely, 2^10660016521 is an apocalyptic number.

10660016521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10660016521 is a deficient number, since it is larger than the sum of its proper divisors (2630393783).

10660016521 is a wasteful number, since it uses less digits than its factorization.

10660016521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138441791.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 10660016521 in words is "ten billion, six hundred sixty million, sixteen thousand, five hundred twenty-one".