1663361700732 has 48 divisors (see below), whose sum is σ = 4330462886400. Its totient is φ = 552134000880.

The previous prime is 1663361700731. The next prime is 1663361700851. The reversal of 1663361700732 is 2370071633661.

It is a happy number.

1663361700732 is a `hidden beast` number, since 1 + 6 + 633 + 6 + 1 + 7 + 0 + 0 + 7 + 3 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663361700731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32194894 + ... + 32246517.

It is an arithmetic number, because the mean of its divisors is an integer number (90217976800).

Almost surely, 2^{1663361700732} is an apocalyptic number.

1663361700732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1663361700732 is an abundant number, since it is smaller than the sum of its proper divisors (2667101185668).

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

1663361700732 is a wasteful number, since it uses less digits than its factorization.

1663361700732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64441663 (or 64441655 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The spelling of 1663361700732 in words is "one trillion, six hundred sixty-three billion, three hundred sixty-one million, seven hundred thousand, seven hundred thirty-two".