66226169390942 has 64 divisors (see below), whose sum is σ = 109083178068480. Its totient is φ = 29905421520000.

The previous prime is 66226169390923. The next prime is 66226169390947. The reversal of 66226169390942 is 24909396162266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66226169390947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5191352828 + ... + 5191365584.

It is an arithmetic number, because the mean of its divisors is an integer number (1704424657320).

Almost surely, 2^{66226169390942} is an apocalyptic number.

66226169390942 is a deficient number, since it is larger than the sum of its proper divisors (42857008677538).

66226169390942 is a wasteful number, since it uses less digits than its factorization.

66226169390942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15377.

The product of its (nonzero) digits is 90699264, while the sum is 65.

The spelling of 66226169390942 in words is "sixty-six trillion, two hundred twenty-six billion, one hundred sixty-nine million, three hundred ninety thousand, nine hundred forty-two".