1617753542121 has 12 divisors (see below), whose sum is σ = 2438353165248. Its totient is φ = 1031610954264.

The previous prime is 1617753542117. The next prime is 1617753542143. The reversal of 1617753542121 is 1212453577161.

1617753542121 is a `hidden beast` number, since 1 + 6 + 1 + 77 + 535 + 4 + 21 + 21 = 666.

It is not a de Polignac number, because 1617753542121 - 2² = 1617753542117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1617753542101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3907617045 + ... + 3907617458.

It is an arithmetic number, because the mean of its divisors is an integer number (203196097104).

Almost surely, 2^{1617753542121} is an apocalyptic number.

It is an amenable number.

1617753542121 is a deficient number, since it is larger than the sum of its proper divisors (820599623127).

1617753542121 is a wasteful number, since it uses less digits than its factorization.

1617753542121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7815234532 (or 7815234529 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The spelling of 1617753542121 in words is "one trillion, six hundred seventeen billion, seven hundred fifty-three million, five hundred forty-two thousand, one hundred twenty-one".