667648551010 has 32 divisors (see below), whose sum is σ = 1433163601152. Its totient is φ = 218955549120.

The previous prime is 667648550939. The next prime is 667648551013. The reversal of 667648551010 is 10155846766.

667648551010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (667648551013) 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, 207342661 + ... + 207345880.

It is an arithmetic number, because the mean of its divisors is an integer number (44786362536).

Almost surely, 2^667648551010 is an apocalyptic number.

667648551010 is an abundant number, since it is smaller than the sum of its proper divisors (765515050142).

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

667648551010 is a wasteful number, since it uses less digits than its factorization.

667648551010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414688578.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 667648551010 in words is "six hundred sixty-seven billion, six hundred forty-eight million, five hundred fifty-one thousand, ten".