99964778324 has 12 divisors (see below), whose sum is σ = 175374620148. Its totient is φ = 49857744000.

The previous prime is 99964778323. The next prime is 99964778359. The reversal of 99964778324 is 42387746999.

It can be written as a sum of positive squares in 2 ways, for example, as 96976188100 + 2988590224 = 311410^2 + 54668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99964778323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31159487 + ... + 31162694.

It is an arithmetic number, because the mean of its divisors is an integer number (14614551679).

Almost surely, 2^99964778324 is an apocalyptic number.

It is an amenable number.

99964778324 is a deficient number, since it is larger than the sum of its proper divisors (75409841824).

99964778324 is a wasteful number, since it uses less digits than its factorization.

99964778324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62322586 (or 62322584 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 68.

The spelling of 99964778324 in words is "ninety-nine billion, nine hundred sixty-four million, seven hundred seventy-eight thousand, three hundred twenty-four".