78619262568 has 256 divisors, whose sum is σ = 261195632640. Its totient is φ = 19090944000.

The previous prime is 78619262567. The next prime is 78619262591. The reversal of 78619262568 is 86526291687.

It is a super-2 number, since 2×78619262568² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78619262567) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 4735530 + ... + 4752102.

It is an arithmetic number, because the mean of its divisors is an integer number (1020295440).

Almost surely, 2^78619262568 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 78619262568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130597816320).

78619262568 is an abundant number, since it is smaller than the sum of its proper divisors (182576370072).

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

78619262568 is a wasteful number, since it uses less digits than its factorization.

78619262568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16768 (or 16764 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 78619262568 in words is "seventy-eight billion, six hundred nineteen million, two hundred sixty-two thousand, five hundred sixty-eight".