28637852836775 has 96 divisors (see below), whose sum is σ = 43957253222400. Its totient is φ = 18022647329280.

The previous prime is 28637852836751. The next prime is 28637852836777. The reversal of 28637852836775 is 57763825873682.

It is a happy number.

It is not a de Polignac number, because 28637852836775 - 2⁶ = 28637852836711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28637852836696 and 28637852836705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28637852836777) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 644205449 + ... + 644249901.

It is an arithmetic number, because the mean of its divisors is an integer number (457888054400).

Almost surely, 2^{28637852836775} is an apocalyptic number.

28637852836775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28637852836775 is a deficient number, since it is larger than the sum of its proper divisors (15319400385625).

28637852836775 is a wasteful number, since it uses less digits than its factorization.

28637852836775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46105 (or 46100 counting only the distinct ones).

The product of its digits is 5689958400, while the sum is 77.

The spelling of 28637852836775 in words is "twenty-eight trillion, six hundred thirty-seven billion, eight hundred fifty-two million, eight hundred thirty-six thousand, seven hundred seventy-five".