513812067878 has 32 divisors (see below), whose sum is σ = 797241139200. Its totient is φ = 248257082304.

The previous prime is 513812067871. The next prime is 513812067943. The reversal of 513812067878 is 878760218315.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513812067871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344983 + ... + 1684221.

It is an arithmetic number, because the mean of its divisors is an integer number (24913785600).

Almost surely, 2^513812067878 is an apocalyptic number.

513812067878 is a deficient number, since it is larger than the sum of its proper divisors (283429071322).

513812067878 is a wasteful number, since it uses less digits than its factorization.

513812067878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339524.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The spelling of 513812067878 in words is "five hundred thirteen billion, eight hundred twelve million, sixty-seven thousand, eight hundred seventy-eight".