10661500515 has 8 divisors (see below), whose sum is σ = 17058400848. Its totient is φ = 5686133600.

The previous prime is 10661500489. The next prime is 10661500573. The reversal of 10661500515 is 51500516601.

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

It is not a de Polignac number, because 10661500515 - 2⁷ = 10661500387 is a prime.

It is a super-2 number, since 2×10661500515² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355383336 + ... + 355383365.

It is an arithmetic number, because the mean of its divisors is an integer number (2132300106).

Almost surely, 2^10661500515 is an apocalyptic number.

10661500515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10661500515 is a deficient number, since it is larger than the sum of its proper divisors (6396900333).

10661500515 is an equidigital number, since it uses as much as digits as its factorization.

10661500515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710766709.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 10661500515 in words is "ten billion, six hundred sixty-one million, five hundred thousand, five hundred fifteen".