66334356122465 has 16 divisors (see below), whose sum is σ = 79673314385088. Its totient is φ = 53019431054016.

The previous prime is 66334356122431. The next prime is 66334356122537. The reversal of 66334356122465 is 56422165343366.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66334356122465 - 2¹⁸ = 66334355860321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66334356122465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132780434 + ... + 133279076.

It is an arithmetic number, because the mean of its divisors is an integer number (4979582149068).

Almost surely, 2^{66334356122465} is an apocalyptic number.

It is an amenable number.

66334356122465 is a deficient number, since it is larger than the sum of its proper divisors (13338958262623).

66334356122465 is a wasteful number, since it uses less digits than its factorization.

66334356122465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522688.

The product of its digits is 55987200, while the sum is 56.

The spelling of 66334356122465 in words is "sixty-six trillion, three hundred thirty-four billion, three hundred fifty-six million, one hundred twenty-two thousand, four hundred sixty-five".