69993456921 has 24 divisors (see below), whose sum is σ = 101822292000. Its totient is φ = 46330506432.

The previous prime is 69993456881. The next prime is 69993456937. The reversal of 69993456921 is 12965439996.

69993456921 is a `hidden beast` number, since 6 + 9 + 9 + 93 + 456 + 92 + 1 = 666.

It is not a de Polignac number, because 69993456921 - 2³³ = 61403522329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69993456991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1028685 + ... + 1094613.

It is an arithmetic number, because the mean of its divisors is an integer number (4242595500).

Almost surely, 2^69993456921 is an apocalyptic number.

It is an amenable number.

69993456921 is a deficient number, since it is larger than the sum of its proper divisors (31828835079).

69993456921 is a wasteful number, since it uses less digits than its factorization.

69993456921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66773 (or 66770 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 63.

The spelling of 69993456921 in words is "sixty-nine billion, nine hundred ninety-three million, four hundred fifty-six thousand, nine hundred twenty-one".