19713677756 has 6 divisors (see below), whose sum is σ = 34498936080. Its totient is φ = 9856838876.

The previous prime is 19713677749. The next prime is 19713677771. The reversal of 19713677756 is 65777631791.

It is a junction number, because it is equal to n+sod(n) for n = 19713677695 and 19713677704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2464209716 + ... + 2464209723.

It is an arithmetic number, because the mean of its divisors is an integer number (5749822680).

Almost surely, 2^19713677756 is an apocalyptic number.

It is an amenable number.

19713677756 is a deficient number, since it is larger than the sum of its proper divisors (14785258324).

19713677756 is a wasteful number, since it uses less digits than its factorization.

19713677756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928419443 (or 4928419441 counting only the distinct ones).

The product of its digits is 11668860, while the sum is 59.

The spelling of 19713677756 in words is "nineteen billion, seven hundred thirteen million, six hundred seventy-seven thousand, seven hundred fifty-six".