78533415768 has 192 divisors, whose sum is σ = 211360268160. Its totient is φ = 24308024832.

The previous prime is 78533415757. The next prime is 78533415833. The reversal of 78533415768 is 86751433587.

It is a super-3 number, since 3×78533415768³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143570871 + ... + 143571417.

It is an arithmetic number, because the mean of its divisors is an integer number (1100834730).

Almost surely, 2^78533415768 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 78533415768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105680134080).

78533415768 is an abundant number, since it is smaller than the sum of its proper divisors (132826852392).

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

78533415768 is a wasteful number, since it uses less digits than its factorization.

78533415768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 871 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 57.

The spelling of 78533415768 in words is "seventy-eight billion, five hundred thirty-three million, four hundred fifteen thousand, seven hundred sixty-eight".