19996914626 has 16 divisors (see below), whose sum is σ = 32665663800. Its totient is φ = 9125643648.

The previous prime is 19996914617. The next prime is 19996914677. The reversal of 19996914626 is 62641969991.

It can be written as a sum of positive squares in 4 ways, for example, as 7621464601 + 12375450025 = 87301^2 + 111245^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4318541 + ... + 4323168.

Almost surely, 2^19996914626 is an apocalyptic number.

19996914626 is a deficient number, since it is larger than the sum of its proper divisors (12668749174).

19996914626 is a wasteful number, since it uses less digits than its factorization.

19996914626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641813.

The product of its digits is 11337408, while the sum is 62.

The spelling of 19996914626 in words is "nineteen billion, nine hundred ninety-six million, nine hundred fourteen thousand, six hundred twenty-six".