20347169697 has 24 divisors (see below), whose sum is σ = 29998999680. Its totient is φ = 13285568160.

The previous prime is 20347169683. The next prime is 20347169741. The reversal of 20347169697 is 79696174302.

It is a happy number.

20347169697 is a `hidden beast` number, since 20 + 3 + 471 + 69 + 6 + 97 = 666.

It is not a de Polignac number, because 20347169697 - 2¹⁴ = 20347153313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20347169657) 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, 73203 + ... + 214599.

It is an arithmetic number, because the mean of its divisors is an integer number (1249958320).

Almost surely, 2^20347169697 is an apocalyptic number.

It is an amenable number.

20347169697 is a deficient number, since it is larger than the sum of its proper divisors (9651829983).

20347169697 is a wasteful number, since it uses less digits than its factorization.

20347169697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141733 (or 141730 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 20347169697 in words is "twenty billion, three hundred forty-seven million, one hundred sixty-nine thousand, six hundred ninety-seven".