79863795716544 has 280 divisors, whose sum is σ = 277873974197600. Its totient is φ = 22201518127104.

The previous prime is 79863795716533. The next prime is 79863795716557. The reversal of 79863795716544 is 44561759736897.

79863795716544 is a `hidden beast` number, since 7 + 9 + 8 + 6 + 3 + 7 + 9 + 57 + 16 + 544 = 666.

It is a super-3 number, since 3×79863795716544³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28398319 + ... + 31083630.

Almost surely, 2^{79863795716544} is an apocalyptic number.

79863795716544 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

79863795716544 is an abundant number, since it is smaller than the sum of its proper divisors (198010178481056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79863795716544 is a wasteful number, since it uses less digits than its factorization.

79863795716544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59482017 (or 59481998 counting only the distinct ones).

The product of its digits is 9601804800, while the sum is 81.

The spelling of 79863795716544 in words is "seventy-nine trillion, eight hundred sixty-three billion, seven hundred ninety-five million, seven hundred sixteen thousand, five hundred forty-four".