66059719056 has 60 divisors (see below), whose sum is σ = 185506556508. Its totient is φ = 21944739072.

The previous prime is 66059719043. The next prime is 66059719067. The reversal of 66059719056 is 65091795066.

66059719056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27007635600 + 39052083456 = 164340^2 + 197616^2 .

It is a super-2 number, since 2×66059719056² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66059718993 and 66059719011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740655 + ... + 825038.

Almost surely, 2^66059719056 is an apocalyptic number.

It is an amenable number.

66059719056 is an abundant number, since it is smaller than the sum of its proper divisors (119446837452).

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

66059719056 is a wasteful number, since it uses less digits than its factorization.

66059719056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566000 (or 1565991 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 54.

The spelling of 66059719056 in words is "sixty-six billion, fifty-nine million, seven hundred nineteen thousand, fifty-six".