17196147921 has 16 divisors (see below), whose sum is σ = 24382944000. Its totient is φ = 10742615808.

The previous prime is 17196147907. The next prime is 17196147953. The reversal of 17196147921 is 12974169171.

It is a happy number.

It is not a de Polignac number, because 17196147921 - 2²³ = 17187759313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17196147901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724521 + ... + 747878.

It is an arithmetic number, because the mean of its divisors is an integer number (1523934000).

Almost surely, 2^17196147921 is an apocalyptic number.

It is an amenable number.

17196147921 is a deficient number, since it is larger than the sum of its proper divisors (7186796079).

17196147921 is a wasteful number, since it uses less digits than its factorization.

17196147921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472648.

The product of its digits is 190512, while the sum is 48.

The spelling of 17196147921 in words is "seventeen billion, one hundred ninety-six million, one hundred forty-seven thousand, nine hundred twenty-one".