987212161199 has 32 divisors (see below), whose sum is σ = 1096373952576. Its totient is φ = 881397918720.

The previous prime is 987212161153. The next prime is 987212161207. The reversal of 987212161199 is 991161212789.

It is a happy number.

It is not a de Polignac number, because 987212161199 - 2³² = 982917193903 is a prime.

It is a super-2 number, since 2×987212161199² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987212161129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325060109 + ... + 325063145.

It is an arithmetic number, because the mean of its divisors is an integer number (34261686018).

Almost surely, 2^987212161199 is an apocalyptic number.

987212161199 is a deficient number, since it is larger than the sum of its proper divisors (109161791377).

987212161199 is a wasteful number, since it uses less digits than its factorization.

987212161199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715.

The product of its digits is 979776, while the sum is 56.

It can be divided in two parts, 987212 and 161199, that added together give a palindrome (1148411).

The spelling of 987212161199 in words is "nine hundred eighty-seven billion, two hundred twelve million, one hundred sixty-one thousand, one hundred ninety-nine".