21352042527 has 8 divisors (see below), whose sum is σ = 28525324080. Its totient is φ = 14206728000.

The previous prime is 21352042507. The next prime is 21352042549. The reversal of 21352042527 is 72524025312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21352042527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21352042507) 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, 6989974 + ... + 6993027.

It is an arithmetic number, because the mean of its divisors is an integer number (3565665510).

Almost surely, 2^21352042527 is an apocalyptic number.

21352042527 is a deficient number, since it is larger than the sum of its proper divisors (7173281553).

21352042527 is a wasteful number, since it uses less digits than its factorization.

21352042527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13983513.

The product of its (nonzero) digits is 33600, while the sum is 33.

Adding to 21352042527 its reverse (72524025312), we get a palindrome (93876067839).

The spelling of 21352042527 in words is "twenty-one billion, three hundred fifty-two million, forty-two thousand, five hundred twenty-seven".