21270550337 has 8 divisors (see below), whose sum is σ = 22005929640. Its totient is φ = 20535298560.

The previous prime is 21270550321. The next prime is 21270550361. The reversal of 21270550337 is 73305507212.

It can be written as a sum of positive squares in 4 ways, for example, as 1768707136 + 19501843201 = 42056^2 + 139649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21270550337 - 2⁴ = 21270550321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21270550297 and 21270550306.

It is not an unprimeable number, because it can be changed into a prime (21270550307) 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 7 ways as a sum of consecutive naturals, for example, 412787 + ... + 461447.

It is an arithmetic number, because the mean of its divisors is an integer number (2750741205).

Almost surely, 2^21270550337 is an apocalyptic number.

It is an amenable number.

21270550337 is a deficient number, since it is larger than the sum of its proper divisors (735379303).

21270550337 is a wasteful number, since it uses less digits than its factorization.

21270550337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63763.

The product of its (nonzero) digits is 44100, while the sum is 35.

The spelling of 21270550337 in words is "twenty-one billion, two hundred seventy million, five hundred fifty thousand, three hundred thirty-seven".