161511103235 has 8 divisors (see below), whose sum is σ = 195292815696. Its totient is φ = 128222554720.

The previous prime is 161511103211. The next prime is 161511103249. The reversal of 161511103235 is 532301115161.

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

It is a de Polignac number, because none of the positive numbers 2^k-161511103235 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161511103198 and 161511103207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123290264 + ... + 123291573.

It is an arithmetic number, because the mean of its divisors is an integer number (24411601962).

Almost surely, 2^161511103235 is an apocalyptic number.

161511103235 is a deficient number, since it is larger than the sum of its proper divisors (33781712461).

161511103235 is a wasteful number, since it uses less digits than its factorization.

161511103235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246581973.

The product of its (nonzero) digits is 2700, while the sum is 29.

Adding to 161511103235 its reverse (532301115161), we get a palindrome (693812218396).

The spelling of 161511103235 in words is "one hundred sixty-one billion, five hundred eleven million, one hundred three thousand, two hundred thirty-five".