667051852704 has 96 divisors (see below), whose sum is σ = 1765898184960. Its totient is φ = 220468211712.

The previous prime is 667051852673. The next prime is 667051852729. The reversal of 667051852704 is 407258150766.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×667051852704² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5283564 + ... + 5408340.

It is an arithmetic number, because the mean of its divisors is an integer number (18394772760).

Almost surely, 2^667051852704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667051852704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882949092480).

667051852704 is an abundant number, since it is smaller than the sum of its proper divisors (1098846332256).

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

667051852704 is a wasteful number, since it uses less digits than its factorization.

667051852704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125262 (or 125254 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 667051852704 in words is "six hundred sixty-seven billion, fifty-one million, eight hundred fifty-two thousand, seven hundred four".