21373463302541 has 16 divisors (see below), whose sum is σ = 24438846599424. Its totient is φ = 18311088783744.

The previous prime is 21373463302511. The next prime is 21373463302561. The reversal of 21373463302541 is 14520336437312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21373463302541 - 2²² = 21373459108237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21373463302492 and 21373463302501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21373463302511) 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 15 ways as a sum of consecutive naturals, for example, 460046585 + ... + 460093041.

It is an arithmetic number, because the mean of its divisors is an integer number (1527427912464).

Almost surely, 2^{21373463302541} is an apocalyptic number.

It is an amenable number.

21373463302541 is a deficient number, since it is larger than the sum of its proper divisors (3065383296883).

21373463302541 is a wasteful number, since it uses less digits than its factorization.

21373463302541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77420.

The product of its (nonzero) digits is 1088640, while the sum is 44.

Adding to 21373463302541 its reverse (14520336437312), we get a palindrome (35893799739853).

The spelling of 21373463302541 in words is "twenty-one trillion, three hundred seventy-three billion, four hundred sixty-three million, three hundred two thousand, five hundred forty-one".