667215451104 has 96 divisors (see below), whose sum is σ = 1854900655776. Its totient is φ = 209273487360.

The previous prime is 667215451103. The next prime is 667215451109. The reversal of 667215451104 is 401154512766.

667215451104 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667215451103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7267374 + ... + 7358610.

It is an arithmetic number, because the mean of its divisors is an integer number (19321881831).

Almost surely, 2^667215451104 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 667215451104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927450327888).

667215451104 is an abundant number, since it is smaller than the sum of its proper divisors (1187685204672).

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

667215451104 is a wasteful number, since it uses less digits than its factorization.

667215451104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95748 (or 95740 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 667215451104 in words is "six hundred sixty-seven billion, two hundred fifteen million, four hundred fifty-one thousand, one hundred four".