838535664866 has 16 divisors (see below), whose sum is σ = 1266229144224. Its totient is φ = 416462166144.

The previous prime is 838535664829. The next prime is 838535664871. The reversal of 838535664866 is 668466535838.

It is a super-2 number, since 2×838535664866² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 838535664796 and 838535664805.

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, 137135 + ... + 1302258.

It is an arithmetic number, because the mean of its divisors is an integer number (79139321514).

Almost surely, 2^838535664866 is an apocalyptic number.

838535664866 is a deficient number, since it is larger than the sum of its proper divisors (427693479358).

838535664866 is a wasteful number, since it uses less digits than its factorization.

838535664866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441345.

The product of its digits is 597196800, while the sum is 68.

The spelling of 838535664866 in words is "eight hundred thirty-eight billion, five hundred thirty-five million, six hundred sixty-four thousand, eight hundred sixty-six".