76556433465566 has 32 divisors (see below), whose sum is σ = 121995364286880. Its totient is φ = 35966939008000.

The previous prime is 76556433465563. The next prime is 76556433465571. The reversal of 76556433465566 is 66556433465567.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 76556433465566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76556433465563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39188096 + ... + 41095251.

It is an arithmetic number, because the mean of its divisors is an integer number (3812355133965).

Almost surely, 2^{76556433465566} is an apocalyptic number.

76556433465566 is a deficient number, since it is larger than the sum of its proper divisors (45438930821314).

76556433465566 is a wasteful number, since it uses less digits than its factorization.

76556433465566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80283820.

The product of its digits is 4898880000, while the sum is 71.

Subtracting from 76556433465566 its reverse (66556433465567), we obtain a palindrome (9999999999999).

The spelling of 76556433465566 in words is "seventy-six trillion, five hundred fifty-six billion, four hundred thirty-three million, four hundred sixty-five thousand, five hundred sixty-six".