76745634487 has 2 divisors, whose sum is σ = 76745634488. Its totient is φ = 76745634486.

The previous prime is 76745634473. The next prime is 76745634503. The reversal of 76745634487 is 78443654767.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76745634487 - 2¹⁵ = 76745601719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76745604487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38372817243 + 38372817244.

It is an arithmetic number, because the mean of its divisors is an integer number (38372817244).

Almost surely, 2^76745634487 is an apocalyptic number.

76745634487 is a deficient number, since it is larger than the sum of its proper divisors (1).

76745634487 is an equidigital number, since it uses as much as digits as its factorization.

76745634487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94832640, while the sum is 61.

The spelling of 76745634487 in words is "seventy-six billion, seven hundred forty-five million, six hundred thirty-four thousand, four hundred eighty-seven".