21514254440353 has 16 divisors (see below), whose sum is σ = 21626545651200. Its totient is φ = 21402111185280.

The previous prime is 21514254440317. The next prime is 21514254440369. The reversal of 21514254440353 is 35304445241512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21514254440353 - 2³³ = 21505664505761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21514254440383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2845420693 + ... + 2845428253.

It is an arithmetic number, because the mean of its divisors is an integer number (1351659103200).

Almost surely, 2^{21514254440353} is an apocalyptic number.

It is an amenable number.

21514254440353 is a deficient number, since it is larger than the sum of its proper divisors (112291210847).

21514254440353 is a wasteful number, since it uses less digits than its factorization.

21514254440353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15432.

The product of its (nonzero) digits is 1152000, while the sum is 43.

Adding to 21514254440353 its reverse (35304445241512), we get a palindrome (56818699681865).

The spelling of 21514254440353 in words is "twenty-one trillion, five hundred fourteen billion, two hundred fifty-four million, four hundred forty thousand, three hundred fifty-three".