719728978636 has 6 divisors (see below), whose sum is σ = 1259525712620. Its totient is φ = 359864489316.

The previous prime is 719728978567. The next prime is 719728978643. The reversal of 719728978636 is 636879827917.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89966122326 + ... + 89966122333.

Almost surely, 2^719728978636 is an apocalyptic number.

It is an amenable number.

719728978636 is a deficient number, since it is larger than the sum of its proper divisors (539796733984).

719728978636 is a wasteful number, since it uses less digits than its factorization.

719728978636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179932244663 (or 179932244661 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 73.

The spelling of 719728978636 in words is "seven hundred nineteen billion, seven hundred twenty-eight million, nine hundred seventy-eight thousand, six hundred thirty-six".