21835055523 has 8 divisors (see below), whose sum is σ = 29114401536. Its totient is φ = 14556206600.

The previous prime is 21835055513. The next prime is 21835055537. The reversal of 21835055523 is 32555053812.

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 21835055523 - 2⁴ = 21835055507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21835055513) 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, 5583 + ... + 209048.

It is an arithmetic number, because the mean of its divisors is an integer number (3639300192).

Almost surely, 2^21835055523 is an apocalyptic number.

21835055523 is a deficient number, since it is larger than the sum of its proper divisors (7279346013).

21835055523 is a wasteful number, since it uses less digits than its factorization.

21835055523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248545.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 21835055523 in words is "twenty-one billion, eight hundred thirty-five million, fifty-five thousand, five hundred twenty-three".