1663346234445 has 64 divisors (see below), whose sum is σ = 3312029952000. Its totient is φ = 695526241536.

The previous prime is 1663346234441. The next prime is 1663346234447. The reversal of 1663346234445 is 5444326433661.

It is not a de Polignac number, because 1663346234445 - 2² = 1663346234441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663346234441) 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, 14317275 + ... + 14432984.

It is an arithmetic number, because the mean of its divisors is an integer number (51750468000).

Almost surely, 2^{1663346234445} is an apocalyptic number.

1663346234445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1663346234445 is a deficient number, since it is larger than the sum of its proper divisors (1648683717555).

1663346234445 is a wasteful number, since it uses less digits than its factorization.

1663346234445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28750322.

The product of its digits is 14929920, while the sum is 51.

The spelling of 1663346234445 in words is "one trillion, six hundred sixty-three billion, three hundred forty-six million, two hundred thirty-four thousand, four hundred forty-five".