99511382321 has 16 divisors (see below), whose sum is σ = 110645004288. Its totient is φ = 88875921600.

The previous prime is 99511382261. The next prime is 99511382339. The reversal of 99511382321 is 12328311599.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99511382321 is a prime.

It is a super-2 number, since 2×99511382321² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99511382351) 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 15 ways as a sum of consecutive naturals, for example, 2279915 + ... + 2323151.

It is an arithmetic number, because the mean of its divisors is an integer number (6915312768).

Almost surely, 2^99511382321 is an apocalyptic number.

It is an amenable number.

99511382321 is a deficient number, since it is larger than the sum of its proper divisors (11133621967).

99511382321 is a wasteful number, since it uses less digits than its factorization.

99511382321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48992.

The product of its digits is 116640, while the sum is 44.

The spelling of 99511382321 in words is "ninety-nine billion, five hundred eleven million, three hundred eighty-two thousand, three hundred twenty-one".