1663552460445 has 64 divisors (see below), whose sum is σ = 3062279208960. Its totient is φ = 765569664000.

The previous prime is 1663552460443. The next prime is 1663552460473. The reversal of 1663552460445 is 5440642553661.

It is not a de Polignac number, because 1663552460445 - 2¹ = 1663552460443 is a prime.

It is a super-2 number, since 2×1663552460445² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663552460441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5387781 + ... + 5688170.

It is an arithmetic number, because the mean of its divisors is an integer number (47848112640).

Almost surely, 2^{1663552460445} is an apocalyptic number.

1663552460445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1663552460445 is a deficient number, since it is larger than the sum of its proper divisors (1398726748515).

1663552460445 is a wasteful number, since it uses less digits than its factorization.

1663552460445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076026.

The product of its (nonzero) digits is 10368000, while the sum is 51.

The spelling of 1663552460445 in words is "one trillion, six hundred sixty-three billion, five hundred fifty-two million, four hundred sixty thousand, four hundred forty-five".