19697916403 has 8 divisors (see below), whose sum is σ = 22069410480. Its totient is φ = 17423218080.

The previous prime is 19697916401. The next prime is 19697916457. The reversal of 19697916403 is 30461979691.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19697916403 - 2¹ = 19697916401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19697916401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24198508 + ... + 24199321.

It is an arithmetic number, because the mean of its divisors is an integer number (2758676310).

Almost surely, 2^19697916403 is an apocalyptic number.

19697916403 is a deficient number, since it is larger than the sum of its proper divisors (2371494077).

19697916403 is a wasteful number, since it uses less digits than its factorization.

19697916403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48397877.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The spelling of 19697916403 in words is "nineteen billion, six hundred ninety-seven million, nine hundred sixteen thousand, four hundred three".