28971553301 has 4 divisors (see below), whose sum is σ = 28971926592. Its totient is φ = 28971180012.

The previous prime is 28971553283. The next prime is 28971553307. The reversal of 28971553301 is 10335517982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28971553301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28971553307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21551 + ... + 241676.

It is an arithmetic number, because the mean of its divisors is an integer number (7242981648).

Almost surely, 2^28971553301 is an apocalyptic number.

It is an amenable number.

28971553301 is a deficient number, since it is larger than the sum of its proper divisors (373291).

28971553301 is a wasteful number, since it uses less digits than its factorization.

28971553301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373290.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 28971553301 in words is "twenty-eight billion, nine hundred seventy-one million, five hundred fifty-three thousand, three hundred one".