28075417065144 has 80 divisors (see below), whose sum is σ = 78644178268920. Its totient is φ = 9357637544640.

The previous prime is 28075417065127. The next prime is 28075417065149. The reversal of 28075417065144 is 44156071457082.

It is a happy number.

28075417065144 is a `hidden beast` number, since 2 + 8 + 0 + 7 + 54 + 1 + 70 + 6 + 514 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075417065149) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5358654 + ... + 9212274.

Almost surely, 2^{28075417065144} is an apocalyptic number.

28075417065144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28075417065144 is an abundant number, since it is smaller than the sum of its proper divisors (50568761203776).

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

28075417065144 is a wasteful number, since it uses less digits than its factorization.

28075417065144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864882 (or 3864869 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 28075417065144 in words is "twenty-eight trillion, seventy-five billion, four hundred seventeen million, sixty-five thousand, one hundred forty-four".