21300152024345 has 16 divisors (see below), whose sum is σ = 25667441057808. Its totient is φ = 16968622479360.

The previous prime is 21300152024341. The next prime is 21300152024357. The reversal of 21300152024345 is 54342025100312.

It can be written as a sum of positive squares in 8 ways, for example, as 1645001195776 + 19655150828569 = 1282576^2 + 4433413^2 .

It is not a de Polignac number, because 21300152024345 - 2² = 21300152024341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300152024341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26080127 + ... + 26884443.

It is an arithmetic number, because the mean of its divisors is an integer number (1604215066113).

Almost surely, 2^{21300152024345} is an apocalyptic number.

It is an amenable number.

21300152024345 is a deficient number, since it is larger than the sum of its proper divisors (4367289033463).

21300152024345 is a wasteful number, since it uses less digits than its factorization.

21300152024345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826540.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 21300152024345 its reverse (54342025100312), we get a palindrome (75642177124657).

The spelling of 21300152024345 in words is "twenty-one trillion, three hundred billion, one hundred fifty-two million, twenty-four thousand, three hundred forty-five".