66507051065012 has 12 divisors (see below), whose sum is σ = 116458874310240. Its totient is φ = 33233086976376.

The previous prime is 66507051064973. The next prime is 66507051065047. The reversal of 66507051065012 is 21056015070566.

It is a super-2 number, since 2×66507051065012² (a number of 28 digits) contains 22 as substring.

It is a congruent 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, 5109631712 + ... + 5109644727.

It is an arithmetic number, because the mean of its divisors is an integer number (9704906192520).

Almost surely, 2^{66507051065012} is an apocalyptic number.

It is an amenable number.

66507051065012 is a deficient number, since it is larger than the sum of its proper divisors (49951823245228).

66507051065012 is a wasteful number, since it uses less digits than its factorization.

66507051065012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219278070 (or 10219278068 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 66507051065012 in words is "sixty-six trillion, five hundred seven billion, fifty-one million, sixty-five thousand, twelve".