19619696943 has 24 divisors (see below), whose sum is σ = 35332442496. Its totient is φ = 10192050000.

The previous prime is 19619696911. The next prime is 19619696947. The reversal of 19619696943 is 34969691691.

19619696943 is a `hidden beast` number, since 1 + 9 + 619 + 6 + 9 + 6 + 9 + 4 + 3 = 666.

It is not a de Polignac number, because 19619696943 - 2⁵ = 19619696911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19619696947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14154933 + ... + 14156318.

It is an arithmetic number, because the mean of its divisors is an integer number (1472185104).

Almost surely, 2^19619696943 is an apocalyptic number.

19619696943 is a deficient number, since it is larger than the sum of its proper divisors (15712745553).

19619696943 is a wasteful number, since it uses less digits than its factorization.

19619696943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28311275 (or 28311272 counting only the distinct ones).

The product of its digits is 17006112, while the sum is 63.

The spelling of 19619696943 in words is "nineteen billion, six hundred nineteen million, six hundred ninety-six thousand, nine hundred forty-three".