66022251017012 has 12 divisors (see below), whose sum is σ = 115610215626276. Its totient is φ = 32990760838080.

The previous prime is 66022251016991. The next prime is 66022251017029. The reversal of 66022251017012 is 21071015222066.

It can be written as a sum of positive squares in 2 ways, for example, as 51978389836816 + 14043861180196 = 7209604^2 + 3747514^2 .

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, 5091160313 + ... + 5091173280.

It is an arithmetic number, because the mean of its divisors is an integer number (9634184635523).

Almost surely, 2^{66022251017012} is an apocalyptic number.

It is an amenable number.

66022251017012 is a deficient number, since it is larger than the sum of its proper divisors (49587964609264).

66022251017012 is a wasteful number, since it uses less digits than its factorization.

66022251017012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10182335218 (or 10182335216 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 66022251017012 its reverse (21071015222066), we get a palindrome (87093266239078).

The spelling of 66022251017012 in words is "sixty-six trillion, twenty-two billion, two hundred fifty-one million, seventeen thousand, twelve".