999999996372 has 72 divisors (see below), whose sum is σ = 2722377073416. Its totient is φ = 307674802944.

The previous prime is 999999996371. The next prime is 999999996449. The reversal of 999999996372 is 273699999999.

It can be written as a sum of positive squares in 4 ways, for example, as 108856444356 + 891143552016 = 329934^2 + 944004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999999996371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9926238 + ... + 10026474.

Almost surely, 2^999999996372 is an apocalyptic number.

It is an amenable number.

999999996372 is an abundant number, since it is smaller than the sum of its proper divisors (1722377077044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999999996372 is a wasteful number, since it uses less digits than its factorization.

999999996372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121577 (or 121572 counting only the distinct ones).

The product of its digits is 10847773692, while the sum is 90.

The spelling of 999999996372 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-six thousand, three hundred seventy-two".