67836152509 has 4 divisors (see below), whose sum is σ = 67852032316. Its totient is φ = 67820272704.

The previous prime is 67836152467. The next prime is 67836152533. The reversal of 67836152509 is 90525163876.

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 41520175225 + 26315977284 = 203765^2 + 162222^2 .

It is a cyclic number.

It is not a de Polignac number, because 67836152509 - 2³¹ = 65688668861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67836152609) 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, 7933494 + ... + 7942039.

It is an arithmetic number, because the mean of its divisors is an integer number (16963008079).

Almost surely, 2^67836152509 is an apocalyptic number.

It is an amenable number.

67836152509 is a deficient number, since it is larger than the sum of its proper divisors (15879807).

67836152509 is a wasteful number, since it uses less digits than its factorization.

67836152509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15879806.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 67836152509 in words is "sixty-seven billion, eight hundred thirty-six million, one hundred fifty-two thousand, five hundred nine".