2140512211555 has 4 divisors (see below), whose sum is σ = 2568614653872. Its totient is φ = 1712409769240.

The previous prime is 2140512211553. The next prime is 2140512211657. The reversal of 2140512211555 is 5551122150412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2140512211555 - 2¹ = 2140512211553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2140512211555.

It is not an unprimeable number, because it can be changed into a prime (2140512211553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 214051221151 + ... + 214051221160.

It is an arithmetic number, because the mean of its divisors is an integer number (642153663468).

Almost surely, 2^{2140512211555} is an apocalyptic number.

2140512211555 is a deficient number, since it is larger than the sum of its proper divisors (428102442317).

2140512211555 is an equidigital number, since it uses as much as digits as its factorization.

2140512211555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428102442316.

The product of its (nonzero) digits is 20000, while the sum is 34.

Adding to 2140512211555 its reverse (5551122150412), we get a palindrome (7691634361967).

The spelling of 2140512211555 in words is "two trillion, one hundred forty billion, five hundred twelve million, two hundred eleven thousand, five hundred fifty-five".