77788652588427 has 16 divisors (see below), whose sum is σ = 115778459668608. Its totient is φ = 46048251002880.

The previous prime is 77788652588371. The next prime is 77788652588447. The reversal of 77788652588427 is 72488525688777.

It is not a de Polignac number, because 77788652588427 - 2²⁷ = 77788518370699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77788652588427.

It is not an unprimeable number, because it can be changed into a prime (77788652588447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27409671798 + ... + 27409674635.

It is an arithmetic number, because the mean of its divisors is an integer number (7236153729288).

Almost surely, 2^{77788652588427} is an apocalyptic number.

77788652588427 is a deficient number, since it is larger than the sum of its proper divisors (37989807080181).

77788652588427 is a wasteful number, since it uses less digits than its factorization.

77788652588427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54819346490.

The product of its digits is 23602790400, while the sum is 84.

The spelling of 77788652588427 in words is "seventy-seven trillion, seven hundred eighty-eight billion, six hundred fifty-two million, five hundred eighty-eight thousand, four hundred twenty-seven".