78722664180 has 384 divisors, whose sum is σ = 240603955200. Its totient is φ = 19193241600.

The previous prime is 78722664169. The next prime is 78722664191. The reversal of 78722664180 is 8146622787.

It is an interprime number because it is at equal distance from previous prime (78722664169) and next prime (78722664191).

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 127 ways as a sum of consecutive naturals, for example, 439791331 + ... + 439791509.

It is an arithmetic number, because the mean of its divisors is an integer number (626572800).

Almost surely, 2^78722664180 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 78722664180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120301977600).

78722664180 is an abundant number, since it is smaller than the sum of its proper divisors (161881291020).

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

78722664180 is a wasteful number, since it uses less digits than its factorization.

78722664180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 78722664180 in words is "seventy-eight billion, seven hundred twenty-two million, six hundred sixty-four thousand, one hundred eighty".