78680115570 has 256 divisors, whose sum is σ = 234247127040. Its totient is φ = 16522361856.

The previous prime is 78680115559. The next prime is 78680115571. The reversal of 78680115570 is 7551108687.

It is a super-2 number, since 2×78680115570² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78680115571) 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 127 ways as a sum of consecutive naturals, for example, 14115304 + ... + 14120876.

It is an arithmetic number, because the mean of its divisors is an integer number (915027840).

Almost surely, 2^78680115570 is an apocalyptic number.

78680115570 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78680115570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117123563520).

78680115570 is an abundant number, since it is smaller than the sum of its proper divisors (155567011470).

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

78680115570 is a wasteful number, since it uses less digits than its factorization.

78680115570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729.

The product of its (nonzero) digits is 470400, while the sum is 48.

The spelling of 78680115570 in words is "seventy-eight billion, six hundred eighty million, one hundred fifteen thousand, five hundred seventy".