215000144055 has 12 divisors (see below), whose sum is σ = 372666916440. Its totient is φ = 114666743472.

The previous prime is 215000143993. The next prime is 215000144057. The reversal of 215000144055 is 550441000512.

215000144055 is a `hidden beast` number, since 215 + 0 + 0 + 0 + 1 + 440 + 5 + 5 = 666.

It is not a de Polignac number, because 215000144055 - 2¹⁹ = 214999619767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215000144057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2388890445 + ... + 2388890534.

It is an arithmetic number, because the mean of its divisors is an integer number (31055576370).

Almost surely, 2^215000144055 is an apocalyptic number.

215000144055 is a deficient number, since it is larger than the sum of its proper divisors (157666772385).

215000144055 is a wasteful number, since it uses less digits than its factorization.

215000144055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777780990 (or 4777780987 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 215000144055 its reverse (550441000512), we get a palindrome (765441144567).

The spelling of 215000144055 in words is "two hundred fifteen billion, one hundred forty-four thousand, fifty-five".