663756485713380 has 144 divisors (see below), whose sum is σ = 2144396329333440. Its totient is φ = 172217898949248.

The previous prime is 663756485713313. The next prime is 663756485713393. The reversal of 663756485713380 is 83317584657366.

663756485713380 is a `hidden beast` number, since 6 + 6 + 3 + 7 + 5 + 6 + 48 + 571 + 3 + 3 + 8 + 0 = 666.

It is a super-2 number, since 2×663756485713380² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 663756485713299 and 663756485713308.

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, 1845433810 + ... + 1845793449.

Almost surely, 2^{663756485713380} is an apocalyptic number.

663756485713380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663756485713380 is an abundant number, since it is smaller than the sum of its proper divisors (1480639843620060).

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

663756485713380 is a wasteful number, since it uses less digits than its factorization.

663756485713380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691227320 (or 3691227306 counting only the distinct ones).

The product of its (nonzero) digits is 1828915200, while the sum is 72.

The spelling of 663756485713380 in words is "six hundred sixty-three trillion, seven hundred fifty-six billion, four hundred eighty-five million, seven hundred thirteen thousand, three hundred eighty".