513666143442 has 24 divisors (see below), whose sum is σ = 1112969555100. Its totient is φ = 171218010240.

The previous prime is 513666143437. The next prime is 513666143447. The reversal of 513666143442 is 244341666315.

It is an interprime number because it is at equal distance from previous prime (513666143437) and next prime (513666143447).

It can be written as a sum of positive squares in 2 ways, for example, as 345698137521 + 167968005921 = 587961^2 + 409839^2 .

It is not an unprimeable number, because it can be changed into a prime (513666143447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504934 + ... + 1132382.

Almost surely, 2^513666143442 is an apocalyptic number.

513666143442 is an abundant number, since it is smaller than the sum of its proper divisors (599303411658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513666143442 is a wasteful number, since it uses less digits than its factorization.

513666143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672938 (or 672935 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The spelling of 513666143442 in words is "five hundred thirteen billion, six hundred sixty-six million, one hundred forty-three thousand, four hundred forty-two".