10664161515 has 80 divisors (see below), whose sum is σ = 22007696832. Its totient is φ = 4839284736.

The previous prime is 10664161513. The next prime is 10664161517. The reversal of 10664161515 is 51516146601.

10664161515 is a `hidden beast` number, since 1 + 0 + 6 + 641 + 6 + 1 + 5 + 1 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (10664161513) and next prime (10664161517).

It is not a de Polignac number, because 10664161515 - 2¹ = 10664161513 is a prime.

It is a super-2 number, since 2×10664161515² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10664161515.

It is not an unprimeable number, because it can be changed into a prime (10664161511) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 374667 + ... + 402123.

Almost surely, 2^10664161515 is an apocalyptic number.

10664161515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10664161515 is an abundant number, since it is smaller than the sum of its proper divisors (11343535317).

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

10664161515 is a wasteful number, since it uses less digits than its factorization.

10664161515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27618 (or 27609 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 10664161515 in words is "ten billion, six hundred sixty-four million, one hundred sixty-one thousand, five hundred fifteen".