21737422055 has 8 divisors (see below), whose sum is σ = 27457796400. Its totient is φ = 16474677696.

The previous prime is 21737422019. The next prime is 21737422103. The reversal of 21737422055 is 55022473712.

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 21737422055 - 2¹⁰ = 21737421031 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114407390 + ... + 114407579.

It is an arithmetic number, because the mean of its divisors is an integer number (3432224550).

Almost surely, 2^21737422055 is an apocalyptic number.

21737422055 is a deficient number, since it is larger than the sum of its proper divisors (5720374345).

21737422055 is a wasteful number, since it uses less digits than its factorization.

21737422055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228814993.

The product of its (nonzero) digits is 117600, while the sum is 38.

Adding to 21737422055 its reverse (55022473712), we get a palindrome (76759895767).

The spelling of 21737422055 in words is "twenty-one billion, seven hundred thirty-seven million, four hundred twenty-two thousand, fifty-five".