66160136544000 has 144 divisors (see below), whose sum is σ = 219750893849760. Its totient is φ = 17642703052800.

The previous prime is 66160136543983. The next prime is 66160136544001. The reversal of 66160136544000 is 44563106166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66160136544001) 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, 344488045 + ... + 344680044.

Almost surely, 2^{66160136544000} is an apocalyptic number.

66160136544000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66160136544000 is an abundant number, since it is smaller than the sum of its proper divisors (153590757305760).

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

66160136544000 is an equidigital number, since it uses as much as digits as its factorization.

66160136544000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689168123 (or 689168099 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 66160136544000 in words is "sixty-six trillion, one hundred sixty billion, one hundred thirty-six million, five hundred forty-four thousand".