28387099355136 has 192 divisors, whose sum is σ = 76665638649600. Its totient is φ = 9339273216000.

The previous prime is 28387099355107. The next prime is 28387099355191. The reversal of 28387099355136 is 63155399078382.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1631340036 + ... + 1631357436.

It is an arithmetic number, because the mean of its divisors is an integer number (399300201300).

Almost surely, 2^{28387099355136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28387099355136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38332819324800).

28387099355136 is an abundant number, since it is smaller than the sum of its proper divisors (48278539294464).

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

28387099355136 is a wasteful number, since it uses less digits than its factorization.

28387099355136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20866 (or 20846 counting only the distinct ones).

The product of its (nonzero) digits is 293932800, while the sum is 69.

The spelling of 28387099355136 in words is "twenty-eight trillion, three hundred eighty-seven billion, ninety-nine million, three hundred fifty-five thousand, one hundred thirty-six".