19699502468 has 12 divisors (see below), whose sum is σ = 34571792220. Its totient is φ = 9821847552.

The previous prime is 19699502467. The next prime is 19699502491. The reversal of 19699502468 is 86420599691.

It can be written as a sum of positive squares in 2 ways, for example, as 4656970564 + 15042531904 = 68242^2 + 122648^2 .

It is not an unprimeable number, because it can be changed into a prime (19699502467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6974333 + ... + 6977156.

It is an arithmetic number, because the mean of its divisors is an integer number (2880982685).

Almost surely, 2^19699502468 is an apocalyptic number.

It is an amenable number.

19699502468 is a deficient number, since it is larger than the sum of its proper divisors (14872289752).

19699502468 is a wasteful number, since it uses less digits than its factorization.

19699502468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13951846 (or 13951844 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 19699502468 in words is "nineteen billion, six hundred ninety-nine million, five hundred two thousand, four hundred sixty-eight".