1611166551652 has 24 divisors (see below), whose sum is σ = 3239203968000. Its totient is φ = 686884765440.

The previous prime is 1611166551623. The next prime is 1611166551661. The reversal of 1611166551652 is 2561556611161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150627277 + ... + 150637972.

It is an arithmetic number, because the mean of its divisors is an integer number (134966832000).

Almost surely, 2^{1611166551652} is an apocalyptic number.

It is an amenable number.

1611166551652 is an abundant number, since it is smaller than the sum of its proper divisors (1628037416348).

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

1611166551652 is a wasteful number, since it uses less digits than its factorization.

1611166551652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301265451 (or 301265449 counting only the distinct ones).

The product of its digits is 324000, while the sum is 46.

The spelling of 1611166551652 in words is "one trillion, six hundred eleven billion, one hundred sixty-six million, five hundred fifty-one thousand, six hundred fifty-two".