21735351001 has 16 divisors (see below), whose sum is σ = 26775798784. Its totient is φ = 17181388224.

The previous prime is 21735350999. The next prime is 21735351041. The reversal of 21735351001 is 10015353712.

It is not a de Polignac number, because 21735351001 - 2¹ = 21735350999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21735351041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9801 + ... + 208726.

It is an arithmetic number, because the mean of its divisors is an integer number (1673487424).

Almost surely, 2^21735351001 is an apocalyptic number.

It is an amenable number.

21735351001 is a deficient number, since it is larger than the sum of its proper divisors (5040447783).

21735351001 is a wasteful number, since it uses less digits than its factorization.

21735351001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219640.

The product of its (nonzero) digits is 3150, while the sum is 28.

The spelling of 21735351001 in words is "twenty-one billion, seven hundred thirty-five million, three hundred fifty-one thousand, one".