987654433211 has 4 divisors (see below), whose sum is σ = 989550123624. Its totient is φ = 985758742800.

The previous prime is 987654433201. The next prime is 987654433243. The reversal of 987654433211 is 112334456789.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 987654433211 - 2⁶ = 987654433147 is a prime.

It is a super-2 number, since 2×987654433211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (987654433201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947844425 + ... + 947845466.

It is an arithmetic number, because the mean of its divisors is an integer number (247387530906).

Almost surely, 2^987654433211 is an apocalyptic number.

987654433211 is a deficient number, since it is larger than the sum of its proper divisors (1895690413).

987654433211 is a wasteful number, since it uses less digits than its factorization.

987654433211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895690412.

The product of its digits is 4354560, while the sum is 53.

The spelling of 987654433211 in words is "nine hundred eighty-seven billion, six hundred fifty-four million, four hundred thirty-three thousand, two hundred eleven".