78290444780 has 12 divisors (see below), whose sum is σ = 164409934080. Its totient is φ = 31316177904.

The previous prime is 78290444747. The next prime is 78290444803. The reversal of 78290444780 is 8744409287.

It is a super-2 number, since 2×78290444780² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1957261100 + ... + 1957261139.

It is an arithmetic number, because the mean of its divisors is an integer number (13700827840).

Almost surely, 2^78290444780 is an apocalyptic number.

It is an amenable number.

78290444780 is an abundant number, since it is smaller than the sum of its proper divisors (86119489300).

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

78290444780 is a wasteful number, since it uses less digits than its factorization.

78290444780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914522248 (or 3914522246 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 78290444780 in words is "seventy-eight billion, two hundred ninety million, four hundred forty-four thousand, seven hundred eighty".