66051726160 has 80 divisors (see below), whose sum is σ = 184746211200. Its totient is φ = 21454391808.

The previous prime is 66051726149. The next prime is 66051726253. The reversal of 66051726160 is 6162715066.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3093295 + ... + 3114574.

It is an arithmetic number, because the mean of its divisors is an integer number (2309327640).

Almost surely, 2^66051726160 is an apocalyptic number.

It is an amenable number.

66051726160 is an abundant number, since it is smaller than the sum of its proper divisors (118694485040).

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

66051726160 is a wasteful number, since it uses less digits than its factorization.

66051726160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207908 (or 6207902 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 66051726160 in words is "sixty-six billion, fifty-one million, seven hundred twenty-six thousand, one hundred sixty".