66732610356 has 36 divisors (see below), whose sum is σ = 178607870532. Its totient is φ = 20935720704.

The previous prime is 66732610313. The next prime is 66732610393. The reversal of 66732610356 is 65301623766.

66732610356 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 48458977956 + 18273632400 = 220134^2 + 135180^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 54519495 + ... + 54520718.

It is an arithmetic number, because the mean of its divisors is an integer number (4961329737).

Almost surely, 2^66732610356 is an apocalyptic number.

It is an amenable number.

66732610356 is an abundant number, since it is smaller than the sum of its proper divisors (111875260176).

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

66732610356 is a wasteful number, since it uses less digits than its factorization.

66732610356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109040240 (or 109040235 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 66732610356 in words is "sixty-six billion, seven hundred thirty-two million, six hundred ten thousand, three hundred fifty-six".