78543742176 has 192 divisors, whose sum is σ = 253108800000. Its totient is φ = 23569717248.

The previous prime is 78543742169. The next prime is 78543742177. The reversal of 78543742176 is 67124734587.

78543742176 is a `hidden beast` number, since 7 + 8 + 54 + 374 + 217 + 6 = 666.

It is a super-2 number, since 2×78543742176² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78543742177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221575 + ... + 454073.

It is an arithmetic number, because the mean of its divisors is an integer number (1318275000).

Almost surely, 2^78543742176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78543742176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126554400000).

78543742176 is an abundant number, since it is smaller than the sum of its proper divisors (174565057824).

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

78543742176 is a wasteful number, since it uses less digits than its factorization.

78543742176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232558 (or 232544 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 54.

The spelling of 78543742176 in words is "seventy-eight billion, five hundred forty-three million, seven hundred forty-two thousand, one hundred seventy-six".