99167721394372 has 12 divisors (see below), whose sum is σ = 173565538578880. Its totient is φ = 49577567514696.

The previous prime is 99167721394327. The next prime is 99167721394439. The reversal of 99167721394372 is 27349312776199.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1573260168 + ... + 1573323199.

Almost surely, 2^{99167721394372} is an apocalyptic number.

It is an amenable number.

99167721394372 is a deficient number, since it is larger than the sum of its proper divisors (74397817184508).

99167721394372 is a wasteful number, since it uses less digits than its factorization.

99167721394372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146591250 (or 3146591248 counting only the distinct ones).

The product of its digits is 216040608, while the sum is 70.

The spelling of 99167721394372 in words is "ninety-nine trillion, one hundred sixty-seven billion, seven hundred twenty-one million, three hundred ninety-four thousand, three hundred seventy-two".