21752151703 has 4 divisors (see below), whose sum is σ = 22453834048. Its totient is φ = 21050469360.

The previous prime is 21752151689. The next prime is 21752151737. The reversal of 21752151703 is 30715125712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21752151703 - 2⁵ = 21752151671 is a prime.

It is a super-2 number, since 2×21752151703² (a number of 21 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 (21752151793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350841126 + ... + 350841187.

It is an arithmetic number, because the mean of its divisors is an integer number (5613458512).

Almost surely, 2^21752151703 is an apocalyptic number.

21752151703 is a deficient number, since it is larger than the sum of its proper divisors (701682345).

21752151703 is an equidigital number, since it uses as much as digits as its factorization.

21752151703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701682344.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 21752151703 in words is "twenty-one billion, seven hundred fifty-two million, one hundred fifty-one thousand, seven hundred three".