19406694915115 has 12 divisors (see below), whose sum is σ = 23423425100784. Its totient is φ = 15435613871264.

The previous prime is 19406694915061. The next prime is 19406694915131. The reversal of 19406694915115 is 51151949660491.

It is not a de Polignac number, because 19406694915115 - 2¹⁹ = 19406694390827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64692799 + ... + 64992088.

It is an arithmetic number, because the mean of its divisors is an integer number (1951952091732).

Almost surely, 2^{19406694915115} is an apocalyptic number.

19406694915115 is a deficient number, since it is larger than the sum of its proper divisors (4016730185669).

19406694915115 is an equidigital number, since it uses as much as digits as its factorization.

19406694915115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129685238 (or 129685065 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 61.

The spelling of 19406694915115 in words is "nineteen trillion, four hundred six billion, six hundred ninety-four million, nine hundred fifteen thousand, one hundred fifteen".