21411146527 has 4 divisors (see below), whose sum is σ = 21619021840. Its totient is φ = 21203271216.

The previous prime is 21411146483. The next prime is 21411146539. The reversal of 21411146527 is 72564111412.

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 21411146527 - 2³¹ = 19263662879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21411146492 and 21411146501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411146597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103937502 + ... + 103937707.

It is an arithmetic number, because the mean of its divisors is an integer number (5404755460).

Almost surely, 2^21411146527 is an apocalyptic number.

21411146527 is a deficient number, since it is larger than the sum of its proper divisors (207875313).

21411146527 is a wasteful number, since it uses less digits than its factorization.

21411146527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207875312.

The product of its digits is 13440, while the sum is 34.

Adding to 21411146527 its reverse (72564111412), we get a palindrome (93975257939).

The spelling of 21411146527 in words is "twenty-one billion, four hundred eleven million, one hundred forty-six thousand, five hundred twenty-seven".