8861512477 has 2 divisors, whose sum is σ = 8861512478. Its totient is φ = 8861512476.

The previous prime is 8861512459. The next prime is 8861512487. The reversal of 8861512477 is 7742151688.

8861512477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5024824996 + 3836687481 = 70886^2 + 61941^2 .

It is a cyclic number.

It is not a de Polignac number, because 8861512477 - 2⁷ = 8861512349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8861512477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8861512417) 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, 4430756238 + 4430756239.

It is an arithmetic number, because the mean of its divisors is an integer number (4430756239).

Almost surely, 2^8861512477 is an apocalyptic number.

It is an amenable number.

8861512477 is a deficient number, since it is larger than the sum of its proper divisors (1).

8861512477 is an equidigital number, since it uses as much as digits as its factorization.

8861512477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752640, while the sum is 49.

The square root of 8861512477 is about 94135.6068499056. The cubic root of 8861512477 is about 2069.3595284135.

The spelling of 8861512477 in words is "eight billion, eight hundred sixty-one million, five hundred twelve thousand, four hundred seventy-seven".