511201645453 has 2 divisors, whose sum is σ = 511201645454. Its totient is φ = 511201645452.

The previous prime is 511201645441. The next prime is 511201645481. The reversal of 511201645453 is 354546102115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297834330564 + 213367314889 = 545742^2 + 461917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511201645453 is a prime.

It is a super-2 number, since 2×511201645453² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511201645403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255600822726 + 255600822727.

It is an arithmetic number, because the mean of its divisors is an integer number (255600822727).

Almost surely, 2^511201645453 is an apocalyptic number.

It is an amenable number.

511201645453 is a deficient number, since it is larger than the sum of its proper divisors (1).

511201645453 is an equidigital number, since it uses as much as digits as its factorization.

511201645453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 511201645453 its reverse (354546102115), we get a palindrome (865747747568).

The spelling of 511201645453 in words is "five hundred eleven billion, two hundred one million, six hundred forty-five thousand, four hundred fifty-three".