76663330766663 has 4 divisors (see below), whose sum is σ = 77214865520520. Its totient is φ = 76111796012808.

The previous prime is 76663330766653. The next prime is 76663330766819. The reversal of 76663330766663 is 36666703336667.

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 76663330766663 - 2¹⁰ = 76663330765639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76663330766593 and 76663330766602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76663330766653) 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, 275767376720 + ... + 275767376997.

It is an arithmetic number, because the mean of its divisors is an integer number (19303716380130).

Almost surely, 2^{76663330766663} is an apocalyptic number.

76663330766663 is a deficient number, since it is larger than the sum of its proper divisors (551534753857).

76663330766663 is a wasteful number, since it uses less digits than its factorization.

76663330766663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551534753856.

The product of its (nonzero) digits is 1111065984, while the sum is 68.

The spelling of 76663330766663 in words is "seventy-six trillion, six hundred sixty-three billion, three hundred thirty million, seven hundred sixty-six thousand, six hundred sixty-three".