76531413566 has 4 divisors (see below), whose sum is σ = 114797120352. Its totient is φ = 38265706782.

The previous prime is 76531413493. The next prime is 76531413583. The reversal of 76531413566 is 66531413567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66531413567 = 101 ⋅658726867.

It is a self number, because there is not a number n which added to its sum of digits gives 76531413566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19132853390 + ... + 19132853393.

It is an arithmetic number, because the mean of its divisors is an integer number (28699280088).

Almost surely, 2^76531413566 is an apocalyptic number.

76531413566 is a deficient number, since it is larger than the sum of its proper divisors (38265706786).

76531413566 is a wasteful number, since it uses less digits than its factorization.

76531413566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38265706785.

The product of its digits is 1360800, while the sum is 47.

Subtracting from 76531413566 its reverse (66531413567), we obtain a palindrome (9999999999).

The spelling of 76531413566 in words is "seventy-six billion, five hundred thirty-one million, four hundred thirteen thousand, five hundred sixty-six".