1661010273360 has 120 divisors (see below), whose sum is σ = 5758169025024. Its totient is φ = 428647806720.

The previous prime is 1661010273341. The next prime is 1661010273389. The reversal of 1661010273360 is 633720101661.

1661010273360 is a `hidden beast` number, since 1 + 6 + 6 + 10 + 10 + 273 + 360 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37186692 + ... + 37231331.

Almost surely, 2^{1661010273360} is an apocalyptic number.

1661010273360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1661010273360 is an abundant number, since it is smaller than the sum of its proper divisors (4097158751664).

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

1661010273360 is a wasteful number, since it uses less digits than its factorization.

1661010273360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74418073 (or 74418064 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 1661010273360 in words is "one trillion, six hundred sixty-one billion, ten million, two hundred seventy-three thousand, three hundred sixty".