76666561055711 has 4 divisors (see below), whose sum is σ = 83636248424424. Its totient is φ = 69696873687000.

The previous prime is 76666561055683. The next prime is 76666561055723. The reversal of 76666561055711 is 11755016566667.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 76666561055711 - 2³⁰ = 76665487313887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76666561055731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3484843684340 + ... + 3484843684361.

It is an arithmetic number, because the mean of its divisors is an integer number (20909062106106).

Almost surely, 2^{76666561055711} is an apocalyptic number.

76666561055711 is a deficient number, since it is larger than the sum of its proper divisors (6969687368713).

76666561055711 is a wasteful number, since it uses less digits than its factorization.

76666561055711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6969687368712.

The product of its (nonzero) digits is 47628000, while the sum is 62.

The spelling of 76666561055711 in words is "seventy-six trillion, six hundred sixty-six billion, five hundred sixty-one million, fifty-five thousand, seven hundred eleven".