21375141513 has 16 divisors (see below), whose sum is σ = 31228091136. Its totient is φ = 12897557840.

The previous prime is 21375141509. The next prime is 21375141523. The reversal of 21375141513 is 31514157312.

It is a cyclic number.

It is not a de Polignac number, because 21375141513 - 2² = 21375141509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (21375141523) 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, 1419231 + ... + 1434212.

It is an arithmetic number, because the mean of its divisors is an integer number (1951755696).

Almost surely, 2^21375141513 is an apocalyptic number.

It is an amenable number.

21375141513 is a deficient number, since it is larger than the sum of its proper divisors (9852949623).

21375141513 is a wasteful number, since it uses less digits than its factorization.

21375141513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853684.

The product of its digits is 12600, while the sum is 33.

Adding to 21375141513 its reverse (31514157312), we get a palindrome (52889298825).

The spelling of 21375141513 in words is "twenty-one billion, three hundred seventy-five million, one hundred forty-one thousand, five hundred thirteen".