66256651081414 has 4 divisors (see below), whose sum is σ = 99384976622124. Its totient is φ = 33128325540706.

The previous prime is 66256651081373. The next prime is 66256651081469. The reversal of 66256651081414 is 41418015665266.

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, 16564162770352 + ... + 16564162770355.

It is an arithmetic number, because the mean of its divisors is an integer number (24846244155531).

Almost surely, 2^{66256651081414} is an apocalyptic number.

66256651081414 is a deficient number, since it is larger than the sum of its proper divisors (33128325540710).

66256651081414 is a wasteful number, since it uses less digits than its factorization.

66256651081414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33128325540709.

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 66256651081414 in words is "sixty-six trillion, two hundred fifty-six billion, six hundred fifty-one million, eighty-one thousand, four hundred fourteen".