21500650341 has 8 divisors (see below), whose sum is σ = 31852815360. Its totient is φ = 14333766876.

The previous prime is 21500650337. The next prime is 21500650411. The reversal of 21500650341 is 14305600512.

21500650341 is a `hidden beast` number, since 2 + 1 + 5 + 0 + 0 + 650 + 3 + 4 + 1 = 666.

It is not a de Polignac number, because 21500650341 - 2² = 21500650337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 796320383 = 21500650341 / (2 + 1 + 5 + 0 + 0 + 6 + 5 + 0 + 3 + 4 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21500650441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398160165 + ... + 398160218.

It is an arithmetic number, because the mean of its divisors is an integer number (3981601920).

Almost surely, 2^21500650341 is an apocalyptic number.

It is an amenable number.

21500650341 is a deficient number, since it is larger than the sum of its proper divisors (10352165019).

21500650341 is an equidigital number, since it uses as much as digits as its factorization.

21500650341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796320392 (or 796320386 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 21500650341 in words is "twenty-one billion, five hundred million, six hundred fifty thousand, three hundred forty-one".