28251157385753 has 4 divisors (see below), whose sum is σ = 28672816451280. Its totient is φ = 27829498320228.

The previous prime is 28251157385743. The next prime is 28251157385791. The reversal of 28251157385753 is 35758375115282.

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 28251157385753 - 2⁸ = 28251157385497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28251157385713) 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, 210829532663 + ... + 210829532796.

It is an arithmetic number, because the mean of its divisors is an integer number (7168204112820).

Almost surely, 2^{28251157385753} is an apocalyptic number.

It is an amenable number.

28251157385753 is a deficient number, since it is larger than the sum of its proper divisors (421659065527).

28251157385753 is an equidigital number, since it uses as much as digits as its factorization.

28251157385753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421659065526.

The product of its digits is 70560000, while the sum is 62.

The spelling of 28251157385753 in words is "twenty-eight trillion, two hundred fifty-one billion, one hundred fifty-seven million, three hundred eighty-five thousand, seven hundred fifty-three".