1611101515161 has 8 divisors (see below), whose sum is σ = 2148147427360. Its totient is φ = 1074061639872.

The previous prime is 1611101515159. The next prime is 1611101515211. The reversal of 1611101515161 is 1615151011161.

It is a happy number.

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

It is not a de Polignac number, because 1611101515161 - 2¹ = 1611101515159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1611101515151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844720 + ... + 1983873.

It is an arithmetic number, because the mean of its divisors is an integer number (268518428420).

Almost surely, 2^{1611101515161} is an apocalyptic number.

It is an amenable number.

1611101515161 is a deficient number, since it is larger than the sum of its proper divisors (537045912199).

1611101515161 is a wasteful number, since it uses less digits than its factorization.

1611101515161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018455.

The product of its (nonzero) digits is 900, while the sum is 30.

The spelling of 1611101515161 in words is "one trillion, six hundred eleven billion, one hundred one million, five hundred fifteen thousand, one hundred sixty-one".