21467153706553 has 2 divisors, whose sum is σ = 21467153706554. Its totient is φ = 21467153706552.

The previous prime is 21467153706529. The next prime is 21467153706679. The reversal of 21467153706553 is 35560735176412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20756653066809 + 710500639744 = 4555947^2 + 842912^2 .

It is a cyclic number.

It is not a de Polignac number, because 21467153706553 - 2⁴¹ = 19268130451001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21467153706494 and 21467153706503.

It is not a weakly prime, because it can be changed into another prime (21467153716553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10733576853276 + 10733576853277.

It is an arithmetic number, because the mean of its divisors is an integer number (10733576853277).

Almost surely, 2^{21467153706553} is an apocalyptic number.

It is an amenable number.

21467153706553 is a deficient number, since it is larger than the sum of its proper divisors (1).

21467153706553 is an equidigital number, since it uses as much as digits as its factorization.

21467153706553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876000, while the sum is 55.

The spelling of 21467153706553 in words is "twenty-one trillion, four hundred sixty-seven billion, one hundred fifty-three million, seven hundred six thousand, five hundred fifty-three".