16312553885 has 4 divisors (see below), whose sum is σ = 19575064668. Its totient is φ = 13050043104.

The previous prime is 16312553863. The next prime is 16312553899. The reversal of 16312553885 is 58835521361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58835521361 = 145391 ⋅404671.

It can be written as a sum of positive squares in 2 ways, for example, as 1808205529 + 14504348356 = 42523^2 + 120434^2 .

It is a cyclic number.

It is not a de Polignac number, because 16312553885 - 2¹⁶ = 16312488349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631255384 + ... + 1631255393.

It is an arithmetic number, because the mean of its divisors is an integer number (4893766167).

Almost surely, 2^16312553885 is an apocalyptic number.

It is an amenable number.

16312553885 is a deficient number, since it is larger than the sum of its proper divisors (3262510783).

16312553885 is an equidigital number, since it uses as much as digits as its factorization.

16312553885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262510782.

The product of its digits is 864000, while the sum is 47.

The spelling of 16312553885 in words is "sixteen billion, three hundred twelve million, five hundred fifty-three thousand, eight hundred eighty-five".