511020001423 has 2 divisors, whose sum is σ = 511020001424. Its totient is φ = 511020001422.

The previous prime is 511020001409. The next prime is 511020001433. The reversal of 511020001423 is 324100020115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 511020001423 - 2²⁵ = 510986446991 is a prime.

It is a super-2 number, since 2×511020001423² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511020001423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511020001403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255510000711 + 255510000712.

It is an arithmetic number, because the mean of its divisors is an integer number (255510000712).

Almost surely, 2^511020001423 is an apocalyptic number.

511020001423 is a deficient number, since it is larger than the sum of its proper divisors (1).

511020001423 is an equidigital number, since it uses as much as digits as its factorization.

511020001423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 511020001423 its reverse (324100020115), we get a palindrome (835120021538).

The spelling of 511020001423 in words is "five hundred eleven billion, twenty million, one thousand, four hundred twenty-three".