28955194561 has 8 divisors (see below), whose sum is σ = 29393097920. Its totient is φ = 28517460048.

The previous prime is 28955194547. The next prime is 28955194613. The reversal of 28955194561 is 16549155982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28955194561 - 2¹⁹ = 28954670273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28955191561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327655 + ... + 406531.

It is an arithmetic number, because the mean of its divisors is an integer number (3674137240).

Almost surely, 2^28955194561 is an apocalyptic number.

It is an amenable number.

28955194561 is a deficient number, since it is larger than the sum of its proper divisors (437903359).

28955194561 is an equidigital number, since it uses as much as digits as its factorization.

28955194561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84423.

The product of its digits is 3888000, while the sum is 55.

The spelling of 28955194561 in words is "twenty-eight billion, nine hundred fifty-five million, one hundred ninety-four thousand, five hundred sixty-one".