19713699747 has 72 divisors (see below), whose sum is σ = 33828795936. Its totient is φ = 11026439424.

The previous prime is 19713699739. The next prime is 19713699791. The reversal of 19713699747 is 74799631791.

It is not a de Polignac number, because 19713699747 - 2³ = 19713699739 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (19713699727) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14420458 + ... + 14421824.

It is an arithmetic number, because the mean of its divisors is an integer number (469844388).

Almost surely, 2^19713699747 is an apocalyptic number.

19713699747 is a deficient number, since it is larger than the sum of its proper divisors (14115096189).

19713699747 is a wasteful number, since it uses less digits than its factorization.

19713699747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2047 counting only the distinct ones).

The product of its digits is 18003384, while the sum is 63.

The spelling of 19713699747 in words is "nineteen billion, seven hundred thirteen million, six hundred ninety-nine thousand, seven hundred forty-seven".