512423712245 has 4 divisors (see below), whose sum is σ = 614908454700. Its totient is φ = 409938969792.

The previous prime is 512423712127. The next prime is 512423712247. The reversal of 512423712245 is 542217324215.

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

It can be written as a sum of positive squares in 2 ways, for example, as 409304373361 + 103119338884 = 639769^2 + 321122^2 .

It is a cyclic number.

It is not a de Polignac number, because 512423712245 - 2¹⁸ = 512423450101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 512423712199 and 512423712208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512423712247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51242371220 + ... + 51242371229.

It is an arithmetic number, because the mean of its divisors is an integer number (153727113675).

Almost surely, 2^512423712245 is an apocalyptic number.

It is an amenable number.

512423712245 is a deficient number, since it is larger than the sum of its proper divisors (102484742455).

512423712245 is a wasteful number, since it uses less digits than its factorization.

512423712245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102484742454.

The product of its digits is 134400, while the sum is 38.

The spelling of 512423712245 in words is "five hundred twelve billion, four hundred twenty-three million, seven hundred twelve thousand, two hundred forty-five".