66090700689070 has 16 divisors (see below), whose sum is σ = 119254124967120. Its totient is φ = 26371643891904.

The previous prime is 66090700689067. The next prime is 66090700689071. The reversal of 66090700689070 is 7098600709066.

It is a junction number, because it is equal to n+sod(n) for n = 66090700688996 and 66090700689014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66090700689071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8079543672 + ... + 8079551851.

It is an arithmetic number, because the mean of its divisors is an integer number (7453382810445).

Almost surely, 2^{66090700689070} is an apocalyptic number.

66090700689070 is a deficient number, since it is larger than the sum of its proper divisors (53163424278050).

66090700689070 is a wasteful number, since it uses less digits than its factorization.

66090700689070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16159095939.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 66090700689070 in words is "sixty-six trillion, ninety billion, seven hundred million, six hundred eighty-nine thousand, seventy".