1028705552477 has 4 divisors (see below), whose sum is σ = 1030194273216. Its totient is φ = 1027216831740.

The previous prime is 1028705552473. The next prime is 1028705552509. The reversal of 1028705552477 is 7742555078201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1028705552477 - 2² = 1028705552473 is a prime.

It is a super-2 number, since 2×1028705552477² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028705552473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744359333 + ... + 744360714.

It is an arithmetic number, because the mean of its divisors is an integer number (257548568304).

Almost surely, 2^{1028705552477} is an apocalyptic number.

It is an amenable number.

1028705552477 is a deficient number, since it is larger than the sum of its proper divisors (1488720739).

1028705552477 is an equidigital number, since it uses as much as digits as its factorization.

1028705552477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488720738.

The product of its (nonzero) digits is 5488000, while the sum is 53.

The spelling of 1028705552477 in words is "one trillion, twenty-eight billion, seven hundred five million, five hundred fifty-two thousand, four hundred seventy-seven".