161015611605502 has 8 divisors (see below), whose sum is σ = 241524804426696. Its totient is φ = 80507343463272.

The previous prime is 161015611605481. The next prime is 161015611605521. The reversal of 161015611605502 is 205506116510161.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230734248 + ... + 231431035.

It is an arithmetic number, because the mean of its divisors is an integer number (30190600553337).

Almost surely, 2^{161015611605502} is an apocalyptic number.

161015611605502 is a deficient number, since it is larger than the sum of its proper divisors (80509192821194).

161015611605502 is a wasteful number, since it uses less digits than its factorization.

161015611605502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462339482.

The product of its (nonzero) digits is 54000, while the sum is 40.

The spelling of 161015611605502 in words is "one hundred sixty-one trillion, fifteen billion, six hundred eleven million, six hundred five thousand, five hundred two".