78146422664543 has 8 divisors (see below), whose sum is σ = 78221889773280. Its totient is φ = 78070958973280.

The previous prime is 78146422664533. The next prime is 78146422664567. The reversal of 78146422664543 is 34546622464187.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78146422664543 is a prime.

It is a super-2 number, since 2×78146422664543² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78146422664533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46148321 + ... + 47811717.

It is an arithmetic number, because the mean of its divisors is an integer number (9777736221660).

Almost surely, 2^{78146422664543} is an apocalyptic number.

78146422664543 is a deficient number, since it is larger than the sum of its proper divisors (75467108737).

78146422664543 is a wasteful number, since it uses less digits than its factorization.

78146422664543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708737.

The product of its digits is 185794560, while the sum is 62.

The spelling of 78146422664543 in words is "seventy-eight trillion, one hundred forty-six billion, four hundred twenty-two million, six hundred sixty-four thousand, five hundred forty-three".