15432684161 has 8 divisors (see below), whose sum is σ = 15508428264. Its totient is φ = 15357097600.

The previous prime is 15432684079. The next prime is 15432684173. The reversal of 15432684161 is 16148623451.

It can be written as a sum of positive squares in 4 ways, for example, as 11541419761 + 3891264400 = 107431^2 + 62380^2 .

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 15432684161 - 2¹⁰ = 15432683137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15432654161) 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, 159461 + ... + 237261.

It is an arithmetic number, because the mean of its divisors is an integer number (1938553533).

Almost surely, 2^15432684161 is an apocalyptic number.

It is an amenable number.

15432684161 is a deficient number, since it is larger than the sum of its proper divisors (75744103).

15432684161 is an equidigital number, since it uses as much as digits as its factorization.

15432684161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78771.

The product of its digits is 138240, while the sum is 41.

The spelling of 15432684161 in words is "fifteen billion, four hundred thirty-two million, six hundred eighty-four thousand, one hundred sixty-one".