67664161156100 has 18 divisors (see below), whose sum is σ = 146831229708954. Its totient is φ = 27065664462400.

The previous prime is 67664161156073. The next prime is 67664161156103. The reversal of 67664161156100 is 165116146676.

It can be written as a sum of positive squares in 3 ways, for example, as 14028575484676 + 53635585671424 = 3745474^2 + 7323632^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (67664161156103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 338320805681 + ... + 338320805880.

Almost surely, 2^{67664161156100} is an apocalyptic number.

It is an amenable number.

67664161156100 is an abundant number, since it is smaller than the sum of its proper divisors (79167068552854).

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

67664161156100 is a wasteful number, since it uses less digits than its factorization.

67664161156100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676641611575 (or 676641611568 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 67664161156100 in words is "sixty-seven trillion, six hundred sixty-four billion, one hundred sixty-one million, one hundred fifty-six thousand, one hundred".