66625000721106 has 8 divisors (see below), whose sum is σ = 133250001442224. Its totient is φ = 22208333573700.

The previous prime is 66625000721093. The next prime is 66625000721113. The reversal of 66625000721106 is 60112700052666.

It is a sphenic number, since it is the product of 3 distinct primes.

66625000721106 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, 5552083393420 + ... + 5552083393431.

It is an arithmetic number, because the mean of its divisors is an integer number (16656250180278).

Almost surely, 2^{66625000721106} is an apocalyptic number.

66625000721106 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.

66625000721106 is a wasteful number, since it uses less digits than its factorization.

66625000721106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11104166786856.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 66625000721106 in words is "sixty-six trillion, six hundred twenty-five billion, seven hundred twenty-one thousand, one hundred six".