211553462028 has 24 divisors (see below), whose sum is σ = 493666604032. Its totient is φ = 70511840784.

The previous prime is 211553462009. The next prime is 211553462089. The reversal of 211553462028 is 820264355112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598900 + ... + 884187.

Almost surely, 2^211553462028 is an apocalyptic number.

It is an amenable number.

211553462028 is an abundant number, since it is smaller than the sum of its proper divisors (282113142004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211553462028 is a wasteful number, since it uses less digits than its factorization.

211553462028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494981 (or 1494979 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 211553462028 in words is "two hundred eleven billion, five hundred fifty-three million, four hundred sixty-two thousand, twenty-eight".