66451729352036 has 12 divisors (see below), whose sum is σ = 132903458704128. Its totient is φ = 28479312579432.

The previous prime is 66451729352009. The next prime is 66451729352053. The reversal of 66451729352036 is 63025392715466.

It is a happy number.

66451729352036 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186638024116 + ... + 1186638024171.

It is an arithmetic number, because the mean of its divisors is an integer number (11075288225344).

Almost surely, 2^{66451729352036} is an apocalyptic number.

It is an amenable number.

66451729352036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66451729352036 is a wasteful number, since it uses less digits than its factorization.

66451729352036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373276048298 (or 2373276048296 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 59.

The spelling of 66451729352036 in words is "sixty-six trillion, four hundred fifty-one billion, seven hundred twenty-nine million, three hundred fifty-two thousand, thirty-six".