1663575247373 has 24 divisors (see below), whose sum is σ = 1896445836000. Its totient is φ = 1454594791104.

The previous prime is 1663575247343. The next prime is 1663575247417. The reversal of 1663575247373 is 3737425753661.

It is not a de Polignac number, because 1663575247373 - 2¹⁰ = 1663575246349 is a prime.

It is a super-2 number, since 2×1663575247373² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663575247343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27902711 + ... + 27962267.

It is an arithmetic number, because the mean of its divisors is an integer number (79018576500).

Almost surely, 2^{1663575247373} is an apocalyptic number.

1663575247373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1663575247373 is a deficient number, since it is larger than the sum of its proper divisors (232870588627).

1663575247373 is a wasteful number, since it uses less digits than its factorization.

1663575247373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68301 (or 68288 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 59.

The spelling of 1663575247373 in words is "one trillion, six hundred sixty-three billion, five hundred seventy-five million, two hundred forty-seven thousand, three hundred seventy-three".