66167163587768 has 16 divisors (see below), whose sum is σ = 124063544229000. Its totient is φ = 33083551793376.

The previous prime is 66167163587731. The next prime is 66167163587771. The reversal of 66167163587768 is 86778536176166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7668743 + ... + 13825481.

Almost surely, 2^{66167163587768} is an apocalyptic number.

It is an amenable number.

66167163587768 is a deficient number, since it is larger than the sum of its proper divisors (57896380641232).

66167163587768 is a wasteful number, since it uses less digits than its factorization.

66167163587768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500134 (or 7500130 counting only the distinct ones).

The product of its digits is 2560481280, while the sum is 77.

The spelling of 66167163587768 in words is "sixty-six trillion, one hundred sixty-seven billion, one hundred sixty-three million, five hundred eighty-seven thousand, seven hundred sixty-eight".