15585947945434 has 4 divisors (see below), whose sum is σ = 23378921918154. Its totient is φ = 7792973972716.

The previous prime is 15585947945429. The next prime is 15585947945467. The reversal of 15585947945434 is 43454974958551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15125511057409 + 460436888025 = 3889153^2 + 678555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3896486986357 + ... + 3896486986360.

Almost surely, 2^{15585947945434} is an apocalyptic number.

15585947945434 is a deficient number, since it is larger than the sum of its proper divisors (7792973972720).

15585947945434 is an equidigital number, since it uses as much as digits as its factorization.

15585947945434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7792973972719.

The product of its digits is 2177280000, while the sum is 73.

The spelling of 15585947945434 in words is "fifteen trillion, five hundred eighty-five billion, nine hundred forty-seven million, nine hundred forty-five thousand, four hundred thirty-four".