1663434203534 has 16 divisors (see below), whose sum is σ = 2556379810656. Its totient is φ = 811549132800.

The previous prime is 1663434203531. The next prime is 1663434203569. The reversal of 1663434203534 is 4353024343661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663434203531) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 60369347 + ... + 60396894.

It is an arithmetic number, because the mean of its divisors is an integer number (159773738166).

Almost surely, 2^{1663434203534} is an apocalyptic number.

1663434203534 is a deficient number, since it is larger than the sum of its proper divisors (892945607122).

1663434203534 is a wasteful number, since it uses less digits than its factorization.

1663434203534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120766411.

The product of its (nonzero) digits is 1866240, while the sum is 44.

The spelling of 1663434203534 in words is "one trillion, six hundred sixty-three billion, four hundred thirty-four million, two hundred three thousand, five hundred thirty-four".