161860410815 has 8 divisors (see below), whose sum is σ = 194234984640. Its totient is φ = 129486667552.

The previous prime is 161860410779. The next prime is 161860410821. The reversal of 161860410815 is 518014068161.

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 161860410815 - 2⁸ = 161860410559 is a prime.

It is a congruent number.

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, 364346 + ... + 675624.

It is an arithmetic number, because the mean of its divisors is an integer number (24279373080).

Almost surely, 2^161860410815 is an apocalyptic number.

161860410815 is a deficient number, since it is larger than the sum of its proper divisors (32374573825).

161860410815 is a wasteful number, since it uses less digits than its factorization.

161860410815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415281.

The product of its (nonzero) digits is 46080, while the sum is 41.

Adding to 161860410815 its reverse (518014068161), we get a palindrome (679874478976).

The spelling of 161860410815 in words is "one hundred sixty-one billion, eight hundred sixty million, four hundred ten thousand, eight hundred fifteen".