211155045434432 has 56 divisors (see below), whose sum is σ = 458094230237952. Its totient is φ = 95771367334400.

The previous prime is 211155045434419. The next prime is 211155045434447. The reversal of 211155045434432 is 234434540551112.

It is a super-2 number, since 2×211155045434432² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 324985808 + ... + 325634895.

It is an arithmetic number, because the mean of its divisors is an integer number (8180254111392).

Almost surely, 2^{211155045434432} is an apocalyptic number.

211155045434432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211155045434432 is an abundant number, since it is smaller than the sum of its proper divisors (246939184803520).

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

211155045434432 is a wasteful number, since it uses less digits than its factorization.

211155045434432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650621187 (or 650621177 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 44.

Adding to 211155045434432 its reverse (234434540551112), we get a palindrome (445589585985544).

The spelling of 211155045434432 in words is "two hundred eleven trillion, one hundred fifty-five billion, forty-five million, four hundred thirty-four thousand, four hundred thirty-two".