28514171910618 has 128 divisors (see below), whose sum is σ = 64580295859200. Its totient is φ = 9323844235776.

The previous prime is 28514171910599. The next prime is 28514171910643. The reversal of 28514171910618 is 81601917141582.

28514171910618 is a `hidden beast` number, since 2 + 8 + 5 + 1 + 4 + 1 + 7 + 1 + 9 + 10 + 618 = 666.

It is a super-2 number, since 2×28514171910618² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4285908580 + ... + 4285915232.

It is an arithmetic number, because the mean of its divisors is an integer number (504533561400).

Almost surely, 2^{28514171910618} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28514171910618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32290147929600).

28514171910618 is an abundant number, since it is smaller than the sum of its proper divisors (36066123948582).

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

28514171910618 is a wasteful number, since it uses less digits than its factorization.

28514171910618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12453 (or 12447 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 54.

The spelling of 28514171910618 in words is "twenty-eight trillion, five hundred fourteen billion, one hundred seventy-one million, nine hundred ten thousand, six hundred eighteen".