10661001515 has 8 divisors (see below), whose sum is σ = 13349428128. Its totient is φ = 8157983680.

The previous prime is 10661001487. The next prime is 10661001553. The reversal of 10661001515 is 51510016601.

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

It is not a de Polignac number, because 10661001515 - 2⁶ = 10661001451 is a prime.

It is a super-2 number, since 2×10661001515² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 46352066 + ... + 46352295.

It is an arithmetic number, because the mean of its divisors is an integer number (1668678516).

Almost surely, 2^10661001515 is an apocalyptic number.

10661001515 is a deficient number, since it is larger than the sum of its proper divisors (2688426613).

10661001515 is an equidigital number, since it uses as much as digits as its factorization.

10661001515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92704389.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 10661001515 in words is "ten billion, six hundred sixty-one million, one thousand, five hundred fifteen".