28153129578 has 64 divisors (see below), whose sum is σ = 69567651840. Its totient is φ = 7414431552.

The previous prime is 28153129573. The next prime is 28153129583. The reversal of 28153129578 is 87592135182.

It is an interprime number because it is at equal distance from previous prime (28153129573) and next prime (28153129583).

It is a self number, because there is not a number n which added to its sum of digits gives 28153129578.

It is not an unprimeable number, because it can be changed into a prime (28153129573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447226 + ... + 506277.

It is an arithmetic number, because the mean of its divisors is an integer number (1086994560).

Almost surely, 2^28153129578 is an apocalyptic number.

28153129578 is an abundant number, since it is smaller than the sum of its proper divisors (41414522262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28153129578 is a wasteful number, since it uses less digits than its factorization.

28153129578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953571.

The product of its digits is 1209600, while the sum is 51.

The spelling of 28153129578 in words is "twenty-eight billion, one hundred fifty-three million, one hundred twenty-nine thousand, five hundred seventy-eight".