19713733965 has 16 divisors (see below), whose sum is σ = 35046638400. Its totient is φ = 10513991376.

The previous prime is 19713733933. The next prime is 19713733967. The reversal of 19713733965 is 56933731791.

It is not a de Polignac number, because 19713733965 - 2⁵ = 19713733933 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19713733967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73013695 + ... + 73013964.

It is an arithmetic number, because the mean of its divisors is an integer number (2190414900).

Almost surely, 2^19713733965 is an apocalyptic number.

19713733965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19713733965 is a deficient number, since it is larger than the sum of its proper divisors (15332904435).

19713733965 is a wasteful number, since it uses less digits than its factorization.

19713733965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146027673 (or 146027667 counting only the distinct ones).

The product of its digits is 3214890, while the sum is 54.

The spelling of 19713733965 in words is "nineteen billion, seven hundred thirteen million, seven hundred thirty-three thousand, nine hundred sixty-five".