66551702015160 has 96 divisors (see below), whose sum is σ = 216294477590880. Its totient is φ = 17747001888000.

The previous prime is 66551702015081. The next prime is 66551702015177. The reversal of 66551702015160 is 6151020715566.

It is a happy number.

66551702015160 is a `hidden beast` number, since 6 + 6 + 5 + 517 + 0 + 20 + 1 + 51 + 60 = 666.

66551702015160 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66551702015160² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62145445 + ... + 63207275.

It is an arithmetic number, because the mean of its divisors is an integer number (2253067474905).

Almost surely, 2^{66551702015160} is an apocalyptic number.

66551702015160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66551702015160 is an abundant number, since it is smaller than the sum of its proper divisors (149742775575720).

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

66551702015160 is a wasteful number, since it uses less digits than its factorization.

66551702015160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235949 (or 1235942 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 66551702015160 in words is "sixty-six trillion, five hundred fifty-one billion, seven hundred two million, fifteen thousand, one hundred sixty".