21003001764071 has 8 divisors (see below), whose sum is σ = 21187461642864. Its totient is φ = 20818907516160.

The previous prime is 21003001764053. The next prime is 21003001764077. The reversal of 21003001764071 is 17046710030012.

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 21003001764071 - 2¹⁰ = 21003001763047 is a prime.

It is a super-2 number, since 2×21003001764071² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003001764077) 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, 91292330 + ... + 91522103.

It is an arithmetic number, because the mean of its divisors is an integer number (2648432705358).

Almost surely, 2^{21003001764071} is an apocalyptic number.

21003001764071 is a deficient number, since it is larger than the sum of its proper divisors (184459878793).

21003001764071 is a wasteful number, since it uses less digits than its factorization.

21003001764071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182815441.

The product of its (nonzero) digits is 7056, while the sum is 32.

Adding to 21003001764071 its reverse (17046710030012), we get a palindrome (38049711794083).

The spelling of 21003001764071 in words is "twenty-one trillion, three billion, one million, seven hundred sixty-four thousand, seventy-one".