19350650405161 has 4 divisors (see below), whose sum is σ = 19350659344324. Its totient is φ = 19350641466000.

The previous prime is 19350650405147. The next prime is 19350650405197. The reversal of 19350650405161 is 16150405605391.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13068514201600 + 6282136203561 = 3615040^2 + 2506419^2 .

It is a cyclic number.

It is not a de Polignac number, because 19350650405161 - 2⁵ = 19350650405129 is a prime.

It is a super-2 number, since 2×19350650405161² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19350650405761) 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 3 ways as a sum of consecutive naturals, for example, 1047511 + ... + 6308611.

It is an arithmetic number, because the mean of its divisors is an integer number (4837664836081).

Almost surely, 2^{19350650405161} is an apocalyptic number.

It is an amenable number.

19350650405161 is a deficient number, since it is larger than the sum of its proper divisors (8939163).

19350650405161 is an equidigital number, since it uses as much as digits as its factorization.

19350650405161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8939162.

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 19350650405161 in words is "nineteen trillion, three hundred fifty billion, six hundred fifty million, four hundred five thousand, one hundred sixty-one".