7666008543442 has 16 divisors (see below), whose sum is σ = 12175754176152. Its totient is φ = 3607435997440.

The previous prime is 7666008543407. The next prime is 7666008543451. The reversal of 7666008543442 is 2443458006667.

It can be written as a sum of positive squares in 4 ways, for example, as 7598408023441 + 67600520001 = 2756521^2 + 260001^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1759609 + ... + 4292812.

Almost surely, 2^{7666008543442} is an apocalyptic number.

7666008543442 is a deficient number, since it is larger than the sum of its proper divisors (4509745632710).

7666008543442 is a wasteful number, since it uses less digits than its factorization.

7666008543442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089693.

The product of its (nonzero) digits is 23224320, while the sum is 55.

The spelling of 7666008543442 in words is "seven trillion, six hundred sixty-six billion, eight million, five hundred forty-three thousand, four hundred forty-two".