78761349220 has 48 divisors (see below), whose sum is σ = 167455209600. Its totient is φ = 31113688320.

The previous prime is 78761349217. The next prime is 78761349221. The reversal of 78761349220 is 2294316787.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78761349221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1503265 + ... + 1554775.

It is an arithmetic number, because the mean of its divisors is an integer number (3488650200).

Almost surely, 2^78761349220 is an apocalyptic number.

It is an amenable number.

78761349220 is an abundant number, since it is smaller than the sum of its proper divisors (88693860380).

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

78761349220 is a wasteful number, since it uses less digits than its factorization.

78761349220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52468 (or 52466 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 78761349220 in words is "seventy-eight billion, seven hundred sixty-one million, three hundred forty-nine thousand, two hundred twenty".