21060255683 has 8 divisors (see below), whose sum is σ = 21276086160. Its totient is φ = 20844568800.

The previous prime is 21060255659. The next prime is 21060255721. The reversal of 21060255683 is 38655206012.

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 21060255683 - 2¹⁶ = 21060190147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21060255653) 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, 272408 + ... + 341066.

It is an arithmetic number, because the mean of its divisors is an integer number (2659510770).

Almost surely, 2^21060255683 is an apocalyptic number.

21060255683 is a deficient number, since it is larger than the sum of its proper divisors (215830477).

21060255683 is a wasteful number, since it uses less digits than its factorization.

21060255683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71797.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 21060255683 in words is "twenty-one billion, sixty million, two hundred fifty-five thousand, six hundred eighty-three".