99721067593382 has 4 divisors (see below), whose sum is σ = 149581601390076. Its totient is φ = 49860533796690.

The previous prime is 99721067593339. The next prime is 99721067593393. The reversal of 99721067593382 is 28339576012799.

99721067593382 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24930266898344 + ... + 24930266898347.

It is an arithmetic number, because the mean of its divisors is an integer number (37395400347519).

Almost surely, 2^{99721067593382} is an apocalyptic number.

99721067593382 is a deficient number, since it is larger than the sum of its proper divisors (49860533796694).

99721067593382 is a wasteful number, since it uses less digits than its factorization.

99721067593382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49860533796693.

The product of its (nonzero) digits is 308629440, while the sum is 71.

The spelling of 99721067593382 in words is "ninety-nine trillion, seven hundred twenty-one billion, sixty-seven million, five hundred ninety-three thousand, three hundred eighty-two".