28201457623 has 2 divisors, whose sum is σ = 28201457624. Its totient is φ = 28201457622.

The previous prime is 28201457591. The next prime is 28201457629. The reversal of 28201457623 is 32675410282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28201457623 - 2⁵ = 28201457591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28201457629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14100728811 + 14100728812.

It is an arithmetic number, because the mean of its divisors is an integer number (14100728812).

Almost surely, 2^28201457623 is an apocalyptic number.

28201457623 is a deficient number, since it is larger than the sum of its proper divisors (1).

28201457623 is an equidigital number, since it uses as much as digits as its factorization.

28201457623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 28201457623 in words is "twenty-eight billion, two hundred one million, four hundred fifty-seven thousand, six hundred twenty-three".