2141555243541 has 32 divisors (see below), whose sum is σ = 3368863039488. Its totient is φ = 1184174449920.

The previous prime is 2141555243519. The next prime is 2141555243629. The reversal of 2141555243541 is 1453425551412.

It is not a de Polignac number, because 2141555243541 - 2¹⁷ = 2141555112469 is a prime.

It is a super-2 number, since 2×2141555243541² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2141555243493 and 2141555243502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141555343541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8341101 + ... + 8594013.

It is an arithmetic number, because the mean of its divisors is an integer number (105276969984).

Almost surely, 2^{2141555243541} is an apocalyptic number.

2141555243541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2141555243541 is a deficient number, since it is larger than the sum of its proper divisors (1227307795947).

2141555243541 is a wasteful number, since it uses less digits than its factorization.

2141555243541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265961.

The product of its digits is 480000, while the sum is 42.

The spelling of 2141555243541 in words is "two trillion, one hundred forty-one billion, five hundred fifty-five million, two hundred forty-three thousand, five hundred forty-one".