28018640757744 has 240 divisors, whose sum is σ = 100750791015840. Its totient is φ = 7389531555840.

The previous prime is 28018640757677. The next prime is 28018640757769. The reversal of 28018640757744 is 44775704681082.

28018640757744 is a `hidden beast` number, since 2 + 8 + 0 + 18 + 6 + 4 + 0 + 7 + 577 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50633737 + ... + 51184104.

It is an arithmetic number, because the mean of its divisors is an integer number (419794962566).

Almost surely, 2^{28018640757744} is an apocalyptic number.

28018640757744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28018640757744 is an abundant number, since it is smaller than the sum of its proper divisors (72732150258096).

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

28018640757744 is a wasteful number, since it uses less digits than its factorization.

28018640757744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101817885 (or 101817866 counting only the distinct ones).

The product of its (nonzero) digits is 84295680, while the sum is 63.

The spelling of 28018640757744 in words is "twenty-eight trillion, eighteen billion, six hundred forty million, seven hundred fifty-seven thousand, seven hundred forty-four".