10661613651202 has 4 divisors (see below), whose sum is σ = 15992420476806. Its totient is φ = 5330806825600.

The previous prime is 10661613651173. The next prime is 10661613651233. The reversal of 10661613651202 is 20215631616601.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 10142638932001 + 518974719201 = 3184751^2 + 720399^2 .

It is a super-2 number, since 2×10661613651202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2665403412799 + ... + 2665403412802.

Almost surely, 2^{10661613651202} is an apocalyptic number.

10661613651202 is a deficient number, since it is larger than the sum of its proper divisors (5330806825604).

10661613651202 is an equidigital number, since it uses as much as digits as its factorization.

10661613651202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330806825603.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 10661613651202 in words is "ten trillion, six hundred sixty-one billion, six hundred thirteen million, six hundred fifty-one thousand, two hundred two".