19147536090865 has 32 divisors (see below), whose sum is σ = 28337033846016. Its totient is φ = 12095075139840.

The previous prime is 19147536090863. The next prime is 19147536090869. The reversal of 19147536090865 is 56809063574191.

It is not a de Polignac number, because 19147536090865 - 2¹ = 19147536090863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19147536090797 and 19147536090806.

It is not an unprimeable number, because it can be changed into a prime (19147536090863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42630462 + ... + 43077271.

It is an arithmetic number, because the mean of its divisors is an integer number (885532307688).

Almost surely, 2^{19147536090865} is an apocalyptic number.

It is an amenable number.

19147536090865 is a deficient number, since it is larger than the sum of its proper divisors (9189497755151).

19147536090865 is a wasteful number, since it uses less digits than its factorization.

19147536090865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85708249.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 19147536090865 in words is "nineteen trillion, one hundred forty-seven billion, five hundred thirty-six million, ninety thousand, eight hundred sixty-five".