21058356703 has 8 divisors (see below), whose sum is σ = 21376486656. Its totient is φ = 20741760600.

The previous prime is 21058356679. The next prime is 21058356731. The reversal of 21058356703 is 30765385012.

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 21058356703 - 2⁹ = 21058356191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21058356733) 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, 355783 + ... + 410728.

It is an arithmetic number, because the mean of its divisors is an integer number (2672060832).

Almost surely, 2^21058356703 is an apocalyptic number.

21058356703 is a deficient number, since it is larger than the sum of its proper divisors (318129953).

21058356703 is an equidigital number, since it uses as much as digits as its factorization.

21058356703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766925.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 21058356703 in words is "twenty-one billion, fifty-eight million, three hundred fifty-six thousand, seven hundred three".