28723871853568 has 22 divisors (see below), whose sum is σ = 57419693053076. Its totient is φ = 14361935926272.

The previous prime is 28723871853557. The next prime is 28723871853619. The reversal of 28723871853568 is 86535817832782.

It is a self number, because there is not a number n which added to its sum of digits gives 28723871853568.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14025327030 + ... + 14025329077.

Almost surely, 2^{28723871853568} is an apocalyptic number.

It is an amenable number.

28723871853568 is a deficient number, since it is larger than the sum of its proper divisors (28695821199508).

28723871853568 is an equidigital number, since it uses as much as digits as its factorization.

28723871853568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28050656127 (or 28050656109 counting only the distinct ones).

The product of its digits is 1083801600, while the sum is 73.

The spelling of 28723871853568 in words is "twenty-eight trillion, seven hundred twenty-three billion, eight hundred seventy-one million, eight hundred fifty-three thousand, five hundred sixty-eight".