19407612345 has 32 divisors (see below), whose sum is σ = 34514273664. Its totient is φ = 9232204800.

The previous prime is 19407612337. The next prime is 19407612379. The reversal of 19407612345 is 54321670491.

It is not a de Polignac number, because 19407612345 - 2³ = 19407612337 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19407612297 and 19407612306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1100896 + ... + 1118385.

It is an arithmetic number, because the mean of its divisors is an integer number (1078571052).

Almost surely, 2^19407612345 is an apocalyptic number.

19407612345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19407612345 is a deficient number, since it is larger than the sum of its proper divisors (15106661319).

19407612345 is a wasteful number, since it uses less digits than its factorization.

19407612345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219353.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 19407612345 in words is "nineteen billion, four hundred seven million, six hundred twelve thousand, three hundred forty-five".