66890516702 has 16 divisors (see below), whose sum is σ = 100802741760. Its totient is φ = 33289653912.

The previous prime is 66890516687. The next prime is 66890516729. The reversal of 66890516702 is 20761509866.

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, 4192913 + ... + 4208835.

It is an arithmetic number, because the mean of its divisors is an integer number (6300171360).

Almost surely, 2^66890516702 is an apocalyptic number.

66890516702 is a deficient number, since it is larger than the sum of its proper divisors (33912225058).

66890516702 is a wasteful number, since it uses less digits than its factorization.

66890516702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25567.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 66890516702 in words is "sixty-six billion, eight hundred ninety million, five hundred sixteen thousand, seven hundred two".