513511444057 has 2 divisors, whose sum is σ = 513511444058. Its totient is φ = 513511444056.

The previous prime is 513511443953. The next prime is 513511444079. The reversal of 513511444057 is 750444115315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375020287321 + 138491156736 = 612389^2 + 372144^2 .

It is a cyclic number.

It is not a de Polignac number, because 513511444057 - 2¹⁵ = 513511411289 is a prime.

It is not a weakly prime, because it can be changed into another prime (513511414057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256755722028 + 256755722029.

It is an arithmetic number, because the mean of its divisors is an integer number (256755722029).

Almost surely, 2^513511444057 is an apocalyptic number.

It is an amenable number.

513511444057 is a deficient number, since it is larger than the sum of its proper divisors (1).

513511444057 is an equidigital number, since it uses as much as digits as its factorization.

513511444057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 513511444057 in words is "five hundred thirteen billion, five hundred eleven million, four hundred forty-four thousand, fifty-seven".