1661000052030 has 256 divisors, whose sum is σ = 4655895552000. Its totient is φ = 374988096000.

The previous prime is 1661000052013. The next prime is 1661000052043. The reversal of 1661000052030 is 302500001661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 155358985 + ... + 155369675.

It is an arithmetic number, because the mean of its divisors is an integer number (18187092000).

Almost surely, 2^{1661000052030} is an apocalyptic number.

1661000052030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1661000052030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2327947776000).

1661000052030 is an abundant number, since it is smaller than the sum of its proper divisors (2994895499970).

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

1661000052030 is a wasteful number, since it uses less digits than its factorization.

1661000052030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11151.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 1661000052030 its reverse (302500001661), we get a palindrome (1963500053691).

The spelling of 1661000052030 in words is "one trillion, six hundred sixty-one billion, fifty-two thousand, thirty".