66736740670070 has 16 divisors (see below), whose sum is σ = 120132297348480. Its totient is φ = 26693326458624.

The previous prime is 66736740670027. The next prime is 66736740670091. The reversal of 66736740670070 is 7007604763766.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66736740669991 and 66736740670009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171021542 + ... + 171411321.

It is an arithmetic number, because the mean of its divisors is an integer number (7508268584280).

Almost surely, 2^{66736740670070} is an apocalyptic number.

66736740670070 is a deficient number, since it is larger than the sum of its proper divisors (53395556678410).

66736740670070 is a wasteful number, since it uses less digits than its factorization.

66736740670070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342452359.

The product of its (nonzero) digits is 37340352, while the sum is 59.

The spelling of 66736740670070 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred forty million, six hundred seventy thousand, seventy".