511217868 has 24 divisors (see below), whose sum is σ = 1363247872. Its totient is φ = 146062224.

The previous prime is 511217851. The next prime is 511217873. The reversal of 511217868 is 868712115.

It is a super-2 number, since 2×511217868² = 522687417124930848, which contains 22 as substring.

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, 3042880 + ... + 3043047.

Almost surely, 2^511217868 is an apocalyptic number.

It is an amenable number.

511217868 is an abundant number, since it is smaller than the sum of its proper divisors (852030004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511217868 is a wasteful number, since it uses less digits than its factorization.

511217868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6085941 (or 6085939 counting only the distinct ones).

The product of its digits is 26880, while the sum is 39.

The square root of 511217868 is about 22610.1275538198. The cubic root of 511217868 is about 799.5924319790.

The spelling of 511217868 in words is "five hundred eleven million, two hundred seventeen thousand, eight hundred sixty-eight".