1607897778609 has 16 divisors (see below), whose sum is σ = 2154967992320. Its totient is φ = 1066384161360.

The previous prime is 1607897778583. The next prime is 1607897778611. The reversal of 1607897778609 is 9068777987061.

It is not a de Polignac number, because 1607897778609 - 2⁵ = 1607897778577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1607897777609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892332 + ... + 2003010.

It is an arithmetic number, because the mean of its divisors is an integer number (134685499520).

Almost surely, 2^{1607897778609} is an apocalyptic number.

It is an amenable number.

1607897778609 is a deficient number, since it is larger than the sum of its proper divisors (547070213711).

1607897778609 is a wasteful number, since it uses less digits than its factorization.

1607897778609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113180.

The product of its (nonzero) digits is 448084224, while the sum is 75.

The spelling of 1607897778609 in words is "one trillion, six hundred seven billion, eight hundred ninety-seven million, seven hundred seventy-eight thousand, six hundred nine".