77868701527 has 2 divisors, whose sum is σ = 77868701528. Its totient is φ = 77868701526.

The previous prime is 77868701503. The next prime is 77868701597. The reversal of 77868701527 is 72510786877.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77868701527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77868701597) by changing a digit.

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, 38934350763 + 38934350764.

It is an arithmetic number, because the mean of its divisors is an integer number (38934350764).

Almost surely, 2^77868701527 is an apocalyptic number.

77868701527 is a deficient number, since it is larger than the sum of its proper divisors (1).

77868701527 is an equidigital number, since it uses as much as digits as its factorization.

77868701527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9219840, while the sum is 58.

The spelling of 77868701527 in words is "seventy-seven billion, eight hundred sixty-eight million, seven hundred one thousand, five hundred twenty-seven".