28555415323 has 2 divisors, whose sum is σ = 28555415324. Its totient is φ = 28555415322.

The previous prime is 28555415309. The next prime is 28555415333. The reversal of 28555415323 is 32351455582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28555415323 - 2¹³ = 28555407131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28555415323.

It is not a weakly prime, because it can be changed into another prime (28555415303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14277707661 + 14277707662.

It is an arithmetic number, because the mean of its divisors is an integer number (14277707662).

Almost surely, 2^28555415323 is an apocalyptic number.

28555415323 is a deficient number, since it is larger than the sum of its proper divisors (1).

28555415323 is an equidigital number, since it uses as much as digits as its factorization.

28555415323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720000, while the sum is 43.

The spelling of 28555415323 in words is "twenty-eight billion, five hundred fifty-five million, four hundred fifteen thousand, three hundred twenty-three".