10661515433 has 4 divisors (see below), whose sum is σ = 10670763348. Its totient is φ = 10652267520.

The previous prime is 10661515421. The next prime is 10661515453. The reversal of 10661515433 is 33451516601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6507326224 + 4154189209 = 80668^2 + 64453^2 .

It is a cyclic number.

It is not a de Polignac number, because 10661515433 - 2¹² = 10661511337 is a prime.

It is a super-2 number, since 2×10661515433² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10661515393 and 10661515402.

It is not an unprimeable number, because it can be changed into a prime (10661515453) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4622228 + ... + 4624533.

It is an arithmetic number, because the mean of its divisors is an integer number (2667690837).

Almost surely, 2^10661515433 is an apocalyptic number.

It is an amenable number.

10661515433 is a deficient number, since it is larger than the sum of its proper divisors (9247915).

10661515433 is an equidigital number, since it uses as much as digits as its factorization.

10661515433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247914.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 10661515433 in words is "ten billion, six hundred sixty-one million, five hundred fifteen thousand, four hundred thirty-three".