1663040227400 has 48 divisors (see below), whose sum is σ = 3867068312100. Its totient is φ = 665130106880.

The previous prime is 1663040227379. The next prime is 1663040227411. The reversal of 1663040227400 is 47220403661.

It can be written as a sum of positive squares in 6 ways, for example, as 1472286170884 + 190754056516 = 1213378^2 + 436754^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1025096 + ... + 2092104.

Almost surely, 2^{1663040227400} is an apocalyptic number.

1663040227400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663040227400 is an abundant number, since it is smaller than the sum of its proper divisors (2204028084700).

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

1663040227400 is a wasteful number, since it uses less digits than its factorization.

1663040227400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074818 (or 1074809 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 1663040227400 in words is "one trillion, six hundred sixty-three billion, forty million, two hundred twenty-seven thousand, four hundred".