28637852836776 has 32 divisors (see below), whose sum is σ = 71597766296160. Its totient is φ = 9545533051712.

The previous prime is 28637852836751. The next prime is 28637852836777. The reversal of 28637852836776 is 67763825873682.

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 7 ways as a sum of consecutive naturals, for example, 25558470 + ... + 26655413.

It is an arithmetic number, because the mean of its divisors is an integer number (2237430196755).

Almost surely, 2^{28637852836776} is an apocalyptic number.

It is an amenable number.

28637852836776 is an abundant number, since it is smaller than the sum of its proper divisors (42959913459384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28637852836776 is a wasteful number, since it uses less digits than its factorization.

28637852836776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52236745 (or 52236741 counting only the distinct ones).

The product of its digits is 6827950080, while the sum is 78.

The spelling of 28637852836776 in words is "twenty-eight trillion, six hundred thirty-seven billion, eight hundred fifty-two million, eight hundred thirty-six thousand, seven hundred seventy-six".