20153054514421 has 2 divisors, whose sum is σ = 20153054514422. Its totient is φ = 20153054514420.

The previous prime is 20153054514391. The next prime is 20153054514427. The reversal of 20153054514421 is 12441545035102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19610850555396 + 542203959025 = 4428414^2 + 736345^2 .

It is a cyclic number.

It is not a de Polignac number, because 20153054514421 - 2¹⁵ = 20153054481653 is a prime.

It is a super-2 number, since 2×20153054514421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20153054514427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076527257210 + 10076527257211.

It is an arithmetic number, because the mean of its divisors is an integer number (10076527257211).

Almost surely, 2^{20153054514421} is an apocalyptic number.

It is an amenable number.

20153054514421 is a deficient number, since it is larger than the sum of its proper divisors (1).

20153054514421 is an equidigital number, since it uses as much as digits as its factorization.

20153054514421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 20153054514421 its reverse (12441545035102), we get a palindrome (32594599549523).

The spelling of 20153054514421 in words is "twenty trillion, one hundred fifty-three billion, fifty-four million, five hundred fourteen thousand, four hundred twenty-one".