66144410162465 has 8 divisors (see below), whose sum is σ = 79722954276480. Its totient is φ = 52682420075632.

The previous prime is 66144410162437. The next prime is 66144410162473. The reversal of 66144410162465 is 56426101444166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66144410162465 - 2¹⁶ = 66144410096929 is a prime.

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, 29138505545 + ... + 29138507814.

It is an arithmetic number, because the mean of its divisors is an integer number (9965369284560).

Almost surely, 2^{66144410162465} is an apocalyptic number.

It is an amenable number.

66144410162465 is a deficient number, since it is larger than the sum of its proper divisors (13578544114015).

66144410162465 is a wasteful number, since it uses less digits than its factorization.

66144410162465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58277013591.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 66144410162465 in words is "sixty-six trillion, one hundred forty-four billion, four hundred ten million, one hundred sixty-two thousand, four hundred sixty-five".