28352630551 has 4 divisors (see below), whose sum is σ = 32403006352. Its totient is φ = 24302254752.

The previous prime is 28352630533. The next prime is 28352630569. The reversal of 28352630551 is 15503625382.

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

It is an interprime number because it is at equal distance from previous prime (28352630533) and next prime (28352630569).

It is a cyclic number.

It is not a de Polignac number, because 28352630551 - 2²¹ = 28350533399 is a prime.

It is a super-2 number, since 2×28352630551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28352630591) 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, 2025187890 + ... + 2025187903.

It is an arithmetic number, because the mean of its divisors is an integer number (8100751588).

Almost surely, 2^28352630551 is an apocalyptic number.

28352630551 is a deficient number, since it is larger than the sum of its proper divisors (4050375801).

28352630551 is an equidigital number, since it uses as much as digits as its factorization.

28352630551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050375800.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 28352630551 in words is "twenty-eight billion, three hundred fifty-two million, six hundred thirty thousand, five hundred fifty-one".