999135621235432 has 16 divisors (see below), whose sum is σ = 1873408810004640. Its totient is φ = 499559938567536.

The previous prime is 999135621235391. The next prime is 999135621235457. The reversal of 999135621235432 is 234532126531999.

It is a happy number.

It is a super-2 number, since 2×999135621235432² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983466838 + ... + 984482245.

It is an arithmetic number, because the mean of its divisors is an integer number (117088050625290).

Almost surely, 2^{999135621235432} is an apocalyptic number.

It is an amenable number.

999135621235432 is a deficient number, since it is larger than the sum of its proper divisors (874273188769208).

999135621235432 is a wasteful number, since it uses less digits than its factorization.

999135621235432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968012552 (or 1968012548 counting only the distinct ones).

The product of its digits is 94478400, while the sum is 64.

The spelling of 999135621235432 in words is "nine hundred ninety-nine trillion, one hundred thirty-five billion, six hundred twenty-one million, two hundred thirty-five thousand, four hundred thirty-two".