66429788792465 has 8 divisors (see below), whose sum is σ = 91103710344000. Its totient is φ = 45551855171952.

The previous prime is 66429788792449. The next prime is 66429788792483. The reversal of 66429788792465 is 56429788792466.

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 66429788792465 - 2⁴ = 66429788792449 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, 948996982715 + ... + 948996982784.

It is an arithmetic number, because the mean of its divisors is an integer number (11387963793000).

Almost surely, 2^{66429788792465} is an apocalyptic number.

It is an amenable number.

66429788792465 is a deficient number, since it is larger than the sum of its proper divisors (24673921551535).

66429788792465 is a wasteful number, since it uses less digits than its factorization.

66429788792465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897993965511.

The product of its digits is 17557585920, while the sum is 83.

Subtracting from 66429788792465 its reverse (56429788792466), we obtain a palindrome (9999999999999).

The spelling of 66429788792465 in words is "sixty-six trillion, four hundred twenty-nine billion, seven hundred eighty-eight million, seven hundred ninety-two thousand, four hundred sixty-five".