19647296612 has 6 divisors (see below), whose sum is σ = 34382769078. Its totient is φ = 9823648304.

The previous prime is 19647296609. The next prime is 19647296639. The reversal of 19647296612 is 21669274691.

It can be written as a sum of positive squares in only one way, i.e., 11479836736 + 8167459876 = 107144^2 + 90374^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2455912073 + ... + 2455912080.

It is an arithmetic number, because the mean of its divisors is an integer number (5730461513).

Almost surely, 2^19647296612 is an apocalyptic number.

It is an amenable number.

19647296612 is a deficient number, since it is larger than the sum of its proper divisors (14735472466).

19647296612 is a wasteful number, since it uses less digits than its factorization.

19647296612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4911824157 (or 4911824155 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The spelling of 19647296612 in words is "nineteen billion, six hundred forty-seven million, two hundred ninety-six thousand, six hundred twelve".