511406616451 has 2 divisors, whose sum is σ = 511406616452. Its totient is φ = 511406616450.

The previous prime is 511406616407. The next prime is 511406616481. The reversal of 511406616451 is 154616604115.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511406616451 is a prime.

It is not a weakly prime, because it can be changed into another prime (511406616481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255703308225 + 255703308226.

It is an arithmetic number, because the mean of its divisors is an integer number (255703308226).

Almost surely, 2^511406616451 is an apocalyptic number.

511406616451 is a deficient number, since it is larger than the sum of its proper divisors (1).

511406616451 is an equidigital number, since it uses as much as digits as its factorization.

511406616451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 511406616451 in words is "five hundred eleven billion, four hundred six million, six hundred sixteen thousand, four hundred fifty-one".