999806967331924 has 24 divisors (see below), whose sum is σ = 1779326954395200. Its totient is φ = 491427927696960.

The previous prime is 999806967331897. The next prime is 999806967331927. The reversal of 999806967331924 is 429133769608999.

It is a super-2 number, since 2×999806967331924² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999806967331927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33537784 + ... + 55896304.

It is an arithmetic number, because the mean of its divisors is an integer number (74138623099800).

Almost surely, 2^{999806967331924} is an apocalyptic number.

It is an amenable number.

999806967331924 is a deficient number, since it is larger than the sum of its proper divisors (779519987063276).

999806967331924 is a wasteful number, since it uses less digits than its factorization.

999806967331924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22548063 (or 22548061 counting only the distinct ones).

The product of its (nonzero) digits is 8571080448, while the sum is 85.

The spelling of 999806967331924 in words is "nine hundred ninety-nine trillion, eight hundred six billion, nine hundred sixty-seven million, three hundred thirty-one thousand, nine hundred twenty-four".