66104253631366 has 4 divisors (see below), whose sum is σ = 99156380447052. Its totient is φ = 33052126815682.

The previous prime is 66104253631327. The next prime is 66104253631387. The reversal of 66104253631366 is 66313635240166.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16526063407840 + ... + 16526063407843.

It is an arithmetic number, because the mean of its divisors is an integer number (24789095111763).

Almost surely, 2^{66104253631366} is an apocalyptic number.

66104253631366 is a deficient number, since it is larger than the sum of its proper divisors (33052126815686).

66104253631366 is a wasteful number, since it uses less digits than its factorization.

66104253631366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33052126815685.

The product of its (nonzero) digits is 8398080, while the sum is 52.

The spelling of 66104253631366 in words is "sixty-six trillion, one hundred four billion, two hundred fifty-three million, six hundred thirty-one thousand, three hundred sixty-six".