511261042403 has 2 divisors, whose sum is σ = 511261042404. Its totient is φ = 511261042402.

The previous prime is 511261042399. The next prime is 511261042427. The reversal of 511261042403 is 304240162115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511261042403 - 2² = 511261042399 is a prime.

It is a super-2 number, since 2×511261042403² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511261042003) 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 as a sum of consecutive naturals, namely, 255630521201 + 255630521202.

It is an arithmetic number, because the mean of its divisors is an integer number (255630521202).

Almost surely, 2^511261042403 is an apocalyptic number.

511261042403 is a deficient number, since it is larger than the sum of its proper divisors (1).

511261042403 is an equidigital number, since it uses as much as digits as its factorization.

511261042403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 511261042403 in words is "five hundred eleven billion, two hundred sixty-one million, forty-two thousand, four hundred three".