21755376571341 has 16 divisors (see below), whose sum is σ = 34220438724608. Its totient is φ = 12030622988400.

The previous prime is 21755376571339. The next prime is 21755376571373. The reversal of 21755376571341 is 14317567355712.

It is not a de Polignac number, because 21755376571341 - 2¹ = 21755376571339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21755376571381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16709197945 + ... + 16709199246.

It is an arithmetic number, because the mean of its divisors is an integer number (2138777420288).

Almost surely, 2^{21755376571341} is an apocalyptic number.

21755376571341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21755376571341 is a deficient number, since it is larger than the sum of its proper divisors (12465062153267).

21755376571341 is a wasteful number, since it uses less digits than its factorization.

21755376571341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33418397232.

The product of its digits is 18522000, while the sum is 57.

The spelling of 21755376571341 in words is "twenty-one trillion, seven hundred fifty-five billion, three hundred seventy-six million, five hundred seventy-one thousand, three hundred forty-one".