28762700821201 has 4 divisors (see below), whose sum is σ = 28780666282404. Its totient is φ = 28744735360000.

The previous prime is 28762700821193. The next prime is 28762700821229. The reversal of 28762700821201 is 10212800726782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22684035226176 + 6078665595025 = 4762776^2 + 2465495^2 .

It is a cyclic number.

It is not a de Polignac number, because 28762700821201 - 2³ = 28762700821193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28762700801201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8982728200 + ... + 8982731401.

It is an arithmetic number, because the mean of its divisors is an integer number (7195166570601).

Almost surely, 2^{28762700821201} is an apocalyptic number.

It is an amenable number.

28762700821201 is a deficient number, since it is larger than the sum of its proper divisors (17965461203).

28762700821201 is a wasteful number, since it uses less digits than its factorization.

28762700821201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17965461202.

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 28762700821201 in words is "twenty-eight trillion, seven hundred sixty-two billion, seven hundred million, eight hundred twenty-one thousand, two hundred one".