19605430678097 has 4 divisors (see below), whose sum is σ = 21387742557936. Its totient is φ = 17823118798260.

The previous prime is 19605430678073. The next prime is 19605430678103. The reversal of 19605430678097 is 79087603450691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19605430678097 - 2⁶ = 19605430678033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19605430698097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891155939903 + ... + 891155939924.

It is an arithmetic number, because the mean of its divisors is an integer number (5346935639484).

Almost surely, 2^{19605430678097} is an apocalyptic number.

It is an amenable number.

19605430678097 is a deficient number, since it is larger than the sum of its proper divisors (1782311879839).

19605430678097 is a wasteful number, since it uses less digits than its factorization.

19605430678097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782311879838.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 19605430678097 in words is "nineteen trillion, six hundred five billion, four hundred thirty million, six hundred seventy-eight thousand, ninety-seven".