2663256520000 has 70 divisors (see below), whose sum is σ = 6604010710418. Its totient is φ = 1065302592000.

The previous prime is 2663256519919. The next prime is 2663256520019. The reversal of 2663256520000 is 256523662.

It can be written as a sum of positive squares in 5 ways, for example, as 876350610496 + 1786905909504 = 936136^2 + 1336752^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 33250707 + ... + 33330706.

Almost surely, 2^{2663256520000} is an apocalyptic number.

2663256520000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2663256520000 is an abundant number, since it is smaller than the sum of its proper divisors (3940754190418).

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

2663256520000 is an frugal number, since it uses more digits than its factorization.

2663256520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66581445 (or 66581420 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 2663256520000 in words is "two trillion, six hundred sixty-three billion, two hundred fifty-six million, five hundred twenty thousand".