28601588551 has 2 divisors, whose sum is σ = 28601588552. Its totient is φ = 28601588550.

The previous prime is 28601588549. The next prime is 28601588623. The reversal of 28601588551 is 15588510682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28601588551 - 2¹ = 28601588549 is a prime.

Together with 28601588549, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28601588495 and 28601588504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28601588531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300794275 + 14300794276.

It is an arithmetic number, because the mean of its divisors is an integer number (14300794276).

Almost surely, 2^28601588551 is an apocalyptic number.

28601588551 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601588551 is an equidigital number, since it uses as much as digits as its factorization.

28601588551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768000, while the sum is 49.

The spelling of 28601588551 in words is "twenty-eight billion, six hundred one million, five hundred eighty-eight thousand, five hundred fifty-one".