10646666242 has 4 divisors (see below), whose sum is σ = 15969999366. Its totient is φ = 5323333120.

The previous prime is 10646666231. The next prime is 10646666291. The reversal of 10646666242 is 24266664601.

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., 5346680641 + 5299985601 = 73121^2 + 72801^2 .

It is a super-2 number, since 2×10646666242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2661666559 + ... + 2661666562.

Almost surely, 2^10646666242 is an apocalyptic number.

10646666242 is a deficient number, since it is larger than the sum of its proper divisors (5323333124).

10646666242 is an equidigital number, since it uses as much as digits as its factorization.

10646666242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323333123.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 10646666242 in words is "ten billion, six hundred forty-six million, six hundred sixty-six thousand, two hundred forty-two".