78655480704 has 128 divisors (see below), whose sum is σ = 232651188000. Its totient is φ = 26161090560.

The previous prime is 78655480667. The next prime is 78655480723. The reversal of 78655480704 is 40708455687.

78655480704 is a `hidden beast` number, since 7 + 8 + 6 + 554 + 80 + 7 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 1568532 + ... + 1617900.

Almost surely, 2^78655480704 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 78655480704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116325594000).

78655480704 is an abundant number, since it is smaller than the sum of its proper divisors (153995707296).

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

78655480704 is a wasteful number, since it uses less digits than its factorization.

78655480704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49853 (or 49835 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 78655480704 in words is "seventy-eight billion, six hundred fifty-five million, four hundred eighty thousand, seven hundred four".