512435463402442 has 4 divisors (see below), whose sum is σ = 768653195103666. Its totient is φ = 256217731701220.

The previous prime is 512435463402431. The next prime is 512435463402607. The reversal of 512435463402442 is 244204364534215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 512230463635081 + 204999767361 = 22632509^2 + 452769^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128108865850609 + ... + 128108865850612.

Almost surely, 2^{512435463402442} is an apocalyptic number.

512435463402442 is a deficient number, since it is larger than the sum of its proper divisors (256217731701224).

512435463402442 is a wasteful number, since it uses less digits than its factorization.

512435463402442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256217731701223.

The product of its (nonzero) digits is 11059200, while the sum is 49.

The spelling of 512435463402442 in words is "five hundred twelve trillion, four hundred thirty-five billion, four hundred sixty-three million, four hundred two thousand, four hundred forty-two".