1611566061011 has 8 divisors (see below), whose sum is σ = 1712855089920. Its totient is φ = 1511924008392.

The previous prime is 1611566060987. The next prime is 1611566061221. The reversal of 1611566061011 is 1101606651161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1611566061011 - 2⁶ = 1611566060947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1611566063011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411742055 + ... + 411745968.

It is an arithmetic number, because the mean of its divisors is an integer number (214106886240).

Almost surely, 2^{1611566061011} is an apocalyptic number.

1611566061011 is a deficient number, since it is larger than the sum of its proper divisors (101289028909).

1611566061011 is a wasteful number, since it uses less digits than its factorization.

1611566061011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823488145.

The product of its (nonzero) digits is 6480, while the sum is 35.

The spelling of 1611566061011 in words is "one trillion, six hundred eleven billion, five hundred sixty-six million, sixty-one thousand, eleven".