663457520057740 has 48 divisors (see below), whose sum is σ = 1404301944820320. Its totient is φ = 263286929917440.

The previous prime is 663457520057663. The next prime is 663457520057753. The reversal of 663457520057740 is 47750025754366.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217189137 + ... + 220222696.

It is an arithmetic number, because the mean of its divisors is an integer number (29256290517090).

Almost surely, 2^{663457520057740} is an apocalyptic number.

It is an amenable number.

663457520057740 is an abundant number, since it is smaller than the sum of its proper divisors (740844424762580).

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

663457520057740 is a wasteful number, since it uses less digits than its factorization.

663457520057740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437412442 (or 437412440 counting only the distinct ones).

The product of its (nonzero) digits is 148176000, while the sum is 61.

The spelling of 663457520057740 in words is "six hundred sixty-three trillion, four hundred fifty-seven billion, five hundred twenty million, fifty-seven thousand, seven hundred forty".