999516226432 has 16 divisors (see below), whose sum is σ = 1991223732600. Its totient is φ = 499758113152.

The previous prime is 999516226369. The next prime is 999516226463. The reversal of 999516226432 is 234622615999.

999516226432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-3 number, since 3×999516226432³ (a number of 37 digits) contains 333 as substring.

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, 3904360132 + ... + 3904360387.

Almost surely, 2^999516226432 is an apocalyptic number.

It is an amenable number.

999516226432 is a deficient number, since it is larger than the sum of its proper divisors (991707506168).

999516226432 is an equidigital number, since it uses as much as digits as its factorization.

999516226432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808720533 (or 7808720521 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 58.

The spelling of 999516226432 in words is "nine hundred ninety-nine billion, five hundred sixteen million, two hundred twenty-six thousand, four hundred thirty-two".