19713569734 has 32 divisors (see below), whose sum is σ = 31250854656. Its totient is φ = 9314196480.

The previous prime is 19713569723. The next prime is 19713569741. The reversal of 19713569734 is 43796531791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662014 + ... + 691150.

It is an arithmetic number, because the mean of its divisors is an integer number (976589208).

Almost surely, 2^19713569734 is an apocalyptic number.

19713569734 is a deficient number, since it is larger than the sum of its proper divisors (11537284922).

19713569734 is a wasteful number, since it uses less digits than its factorization.

19713569734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29440.

The product of its digits is 4286520, while the sum is 55.

It can be divided in two parts, 19 and 713569734, that added together give a triangular number (713569753 = T₃₇₇₇₇).

The spelling of 19713569734 in words is "nineteen billion, seven hundred thirteen million, five hundred sixty-nine thousand, seven hundred thirty-four".