28452411551 has 4 divisors (see below), whose sum is σ = 28498827192. Its totient is φ = 28405995912.

The previous prime is 28452411529. The next prime is 28452411557. The reversal of 28452411551 is 15511425482.

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

It is a cyclic number.

It is not a de Polignac number, because 28452411551 - 2²² = 28448217247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28452411557) 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, 23206901 + ... + 23208126.

It is an arithmetic number, because the mean of its divisors is an integer number (7124706798).

Almost surely, 2^28452411551 is an apocalyptic number.

28452411551 is a deficient number, since it is larger than the sum of its proper divisors (46415641).

28452411551 is an equidigital number, since it uses as much as digits as its factorization.

28452411551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46415640.

The product of its digits is 64000, while the sum is 38.

The spelling of 28452411551 in words is "twenty-eight billion, four hundred fifty-two million, four hundred eleven thousand, five hundred fifty-one".