663028072514640 has 960 divisors, whose sum is σ = 2723132333376000. Its totient is φ = 149846338768896.

The previous prime is 663028072514629. The next prime is 663028072514657. The reversal of 663028072514640 is 46415270820366.

663028072514640 is a `hidden beast` number, since 6 + 6 + 3 + 0 + 2 + 80 + 7 + 2 + 514 + 6 + 40 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 592886254 + ... + 594003506.

It is an arithmetic number, because the mean of its divisors is an integer number (2836596180600).

Almost surely, 2^{663028072514640} is an apocalyptic number.

663028072514640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663028072514640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361566166688000).

663028072514640 is an abundant number, since it is smaller than the sum of its proper divisors (2060104260861360).

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

663028072514640 is a wasteful number, since it uses less digits than its factorization.

663028072514640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117391 (or 1117359 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 663028072514640 in words is "six hundred sixty-three trillion, twenty-eight billion, seventy-two million, five hundred fourteen thousand, six hundred forty".