77425566511 has 2 divisors, whose sum is σ = 77425566512. Its totient is φ = 77425566510.

The previous prime is 77425566503. The next prime is 77425566593. The reversal of 77425566511 is 11566552477.

It is a weak prime.

It is an emirp because it is prime and its reverse (11566552477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77425566511 - 2³ = 77425566503 is a prime.

It is a super-3 number, since 3×77425566511³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77425566311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38712783255 + 38712783256.

It is an arithmetic number, because the mean of its divisors is an integer number (38712783256).

Almost surely, 2^77425566511 is an apocalyptic number.

77425566511 is a deficient number, since it is larger than the sum of its proper divisors (1).

77425566511 is an equidigital number, since it uses as much as digits as its factorization.

77425566511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764000, while the sum is 49.

The spelling of 77425566511 in words is "seventy-seven billion, four hundred twenty-five million, five hundred sixty-six thousand, five hundred eleven".