1661705474300 has 54 divisors (see below), whose sum is σ = 3762819169368. Its totient is φ = 635759310560.

The previous prime is 1661705474267. The next prime is 1661705474311. The reversal of 1661705474300 is 34745071661.

It is a super-2 number, since 2×1661705474300² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61808261 + ... + 61835139.

Almost surely, 2^{1661705474300} is an apocalyptic number.

1661705474300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1661705474300 is an abundant number, since it is smaller than the sum of its proper divisors (2101113695068).

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

1661705474300 is an frugal number, since it uses more digits than its factorization.

1661705474300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53795 (or 26909 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 1661705474300 in words is "one trillion, six hundred sixty-one billion, seven hundred five million, four hundred seventy-four thousand, three hundred".