211455414477834 has 16 divisors (see below), whose sum is σ = 422911073548800. Its totient is φ = 70485097393760.

The previous prime is 211455414477829. The next prime is 211455414477941. The reversal of 211455414477834 is 438774414554112.

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 7 ways as a sum of consecutive naturals, for example, 2207767 + ... + 20682965.

It is an arithmetic number, because the mean of its divisors is an integer number (26431942096800).

Almost surely, 2^{211455414477834} is an apocalyptic number.

211455414477834 is an abundant number, since it is smaller than the sum of its proper divisors (211455659070966).

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

211455414477834 is a wasteful number, since it uses less digits than its factorization.

211455414477834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20382765.

The product of its digits is 60211200, while the sum is 60.

The spelling of 211455414477834 in words is "two hundred eleven trillion, four hundred fifty-five billion, four hundred fourteen million, four hundred seventy-seven thousand, eight hundred thirty-four".