78468856564531 has 8 divisors (see below), whose sum is σ = 78475521533024. Its totient is φ = 78462191903040.

The previous prime is 78468856564463. The next prime is 78468856564603. The reversal of 78468856564531 is 13546565886487.

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 78468856564531 - 2³⁷ = 78331417611059 is a prime.

It is a super-3 number, since 3×78468856564531³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78468856565531) 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, 894483751 + ... + 894571471.

It is an arithmetic number, because the mean of its divisors is an integer number (9809440191628).

Almost surely, 2^{78468856564531} is an apocalyptic number.

78468856564531 is a deficient number, since it is larger than the sum of its proper divisors (6664968493).

78468856564531 is a wasteful number, since it uses less digits than its factorization.

78468856564531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153501.

The product of its digits is 4644864000, while the sum is 76.

The spelling of 78468856564531 in words is "seventy-eight trillion, four hundred sixty-eight billion, eight hundred fifty-six million, five hundred sixty-four thousand, five hundred thirty-one".