78773127680 has 160 divisors (see below), whose sum is σ = 204042440448. Its totient is φ = 28993536000.

The previous prime is 78773127679. The next prime is 78773127701. The reversal of 78773127680 is 8672137787.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11012105 + ... + 11019255.

Almost surely, 2^78773127680 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 78773127680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102021220224).

78773127680 is an abundant number, since it is smaller than the sum of its proper divisors (125269312768).

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

78773127680 is a wasteful number, since it uses less digits than its factorization.

78773127680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7518 (or 7502 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 56.

The spelling of 78773127680 in words is "seventy-eight billion, seven hundred seventy-three million, one hundred twenty-seven thousand, six hundred eighty".