667651061026 has 8 divisors (see below), whose sum is σ = 1002507981264. Its totient is φ = 333481733940.

The previous prime is 667651061017. The next prime is 667651061029. The reversal of 667651061026 is 620160156766.

667651061026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (667651061029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171895860 + ... + 171899743.

It is an arithmetic number, because the mean of its divisors is an integer number (125313497658).

Almost surely, 2^667651061026 is an apocalyptic number.

667651061026 is a deficient number, since it is larger than the sum of its proper divisors (334856920238).

667651061026 is a wasteful number, since it uses less digits than its factorization.

667651061026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343796576.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 667651061026 in words is "six hundred sixty-seven billion, six hundred fifty-one million, sixty-one thousand, twenty-six".