385665513636878 has 16 divisors (see below), whose sum is σ = 579057151561056. Its totient is φ = 192646472309280.

The previous prime is 385665513636863. The next prime is 385665513636881. The reversal of 385665513636878 is 878636315566583.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82381700 + ... + 86937192.

It is an arithmetic number, because the mean of its divisors is an integer number (36191071972566).

Almost surely, 2^{385665513636878} is an apocalyptic number.

385665513636878 is a deficient number, since it is larger than the sum of its proper divisors (193391637924178).

385665513636878 is a wasteful number, since it uses less digits than its factorization.

385665513636878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596379.

The product of its digits is 15676416000, while the sum is 80.

The spelling of 385665513636878 in words is "three hundred eighty-five trillion, six hundred sixty-five billion, five hundred thirteen million, six hundred thirty-six thousand, eight hundred seventy-eight".