15505056161 has 8 divisors (see below), whose sum is σ = 18331101120. Its totient is φ = 12831770448.

The previous prime is 15505056121. The next prime is 15505056167. The reversal of 15505056161 is 16165050551.

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

It is not a de Polignac number, because 15505056161 - 2¹⁴ = 15505039777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15505056167) 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, 38189591 + ... + 38189996.

It is an arithmetic number, because the mean of its divisors is an integer number (2291387640).

Almost surely, 2^15505056161 is an apocalyptic number.

It is an amenable number.

15505056161 is a deficient number, since it is larger than the sum of its proper divisors (2826044959).

15505056161 is an equidigital number, since it uses as much as digits as its factorization.

15505056161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76379623.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 15505056161 in words is "fifteen billion, five hundred five million, fifty-six thousand, one hundred sixty-one".