28700544253871 has 16 divisors (see below), whose sum is σ = 32899402599168. Its totient is φ = 24526488830400.

The previous prime is 28700544253847. The next prime is 28700544253897. The reversal of 28700544253871 is 17835244500782.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28700544253871 - 2³⁰ = 28699470512047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28700544253811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1293710 + ... + 7686011.

It is an arithmetic number, because the mean of its divisors is an integer number (2056212662448).

Almost surely, 2^{28700544253871} is an apocalyptic number.

28700544253871 is a deficient number, since it is larger than the sum of its proper divisors (4198858345297).

28700544253871 is an equidigital number, since it uses as much as digits as its factorization.

28700544253871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8981102.

The product of its (nonzero) digits is 15052800, while the sum is 56.

The spelling of 28700544253871 in words is "twenty-eight trillion, seven hundred billion, five hundred forty-four million, two hundred fifty-three thousand, eight hundred seventy-one".