211534154004 has 12 divisors (see below), whose sum is σ = 493579692704. Its totient is φ = 70511384664.

The previous prime is 211534154003. The next prime is 211534154021. The reversal of 211534154004 is 400451435112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211534154003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8813923072 + ... + 8813923095.

Almost surely, 2^211534154004 is an apocalyptic number.

It is an amenable number.

211534154004 is an abundant number, since it is smaller than the sum of its proper divisors (282045538700).

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

211534154004 is a wasteful number, since it uses less digits than its factorization.

211534154004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17627846174 (or 17627846172 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 211534154004 its reverse (400451435112), we get a palindrome (611985589116).

The spelling of 211534154004 in words is "two hundred eleven billion, five hundred thirty-four million, one hundred fifty-four thousand, four".