28572538439 has 2 divisors, whose sum is σ = 28572538440. Its totient is φ = 28572538438.

The previous prime is 28572538427. The next prime is 28572538457. The reversal of 28572538439 is 93483527582.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28572538439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28572538139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14286269219 + 14286269220.

It is an arithmetic number, because the mean of its divisors is an integer number (14286269220).

Almost surely, 2^28572538439 is an apocalyptic number.

28572538439 is a deficient number, since it is larger than the sum of its proper divisors (1).

28572538439 is an equidigital number, since it uses as much as digits as its factorization.

28572538439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 56.

The spelling of 28572538439 in words is "twenty-eight billion, five hundred seventy-two million, five hundred thirty-eight thousand, four hundred thirty-nine".