51867003666 has 32 divisors (see below), whose sum is σ = 104825685888. Its totient is φ = 17107130880.

The previous prime is 51867003659. The next prime is 51867003673. The reversal of 51867003666 is 66630076815.

It is an interprime number because it is at equal distance from previous prime (51867003659) and next prime (51867003673).

It is a super-4 number, since 4×51867003666⁴ (a number of 44 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5128771 + ... + 5138873.

It is an arithmetic number, because the mean of its divisors is an integer number (3275802684).

Almost surely, 2^51867003666 is an apocalyptic number.

51867003666 is an abundant number, since it is smaller than the sum of its proper divisors (52958682222).

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

51867003666 is a wasteful number, since it uses less digits than its factorization.

51867003666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19026.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 51867003666 in words is "fifty-one billion, eight hundred sixty-seven million, three thousand, six hundred sixty-six".