21523033301053 has 8 divisors (see below), whose sum is σ = 22327073758080. Its totient is φ = 20732282769120.

The previous prime is 21523033300999. The next prime is 21523033301057. The reversal of 21523033301053 is 35010333032512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21523033301053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21523033301057) 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 7 ways as a sum of consecutive naturals, for example, 3322477975 + ... + 3322484452.

It is an arithmetic number, because the mean of its divisors is an integer number (2790884219760).

Almost surely, 2^{21523033301053} is an apocalyptic number.

It is an amenable number.

21523033301053 is a deficient number, since it is larger than the sum of its proper divisors (804040457027).

21523033301053 is an equidigital number, since it uses as much as digits as its factorization.

21523033301053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644962547.

The product of its (nonzero) digits is 24300, while the sum is 31.

Adding to 21523033301053 its reverse (35010333032512), we get a palindrome (56533366333565).

The spelling of 21523033301053 in words is "twenty-one trillion, five hundred twenty-three billion, thirty-three million, three hundred one thousand, fifty-three".