78564541126428 has 54 divisors (see below), whose sum is σ = 231017162603136. Its totient is φ = 22447011749904.

The previous prime is 78564541126417. The next prime is 78564541126433. The reversal of 78564541126428 is 82462114546587.

78564541126428 is a `hidden beast` number, since 7 + 8 + 5 + 6 + 4 + 541 + 1 + 2 + 64 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22268859100 + ... + 22268862627.

Almost surely, 2^{78564541126428} is an apocalyptic number.

It is an amenable number.

78564541126428 is an abundant number, since it is smaller than the sum of its proper divisors (152452621476708).

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

78564541126428 is a wasteful number, since it uses less digits than its factorization.

78564541126428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44537721751 (or 44537721739 counting only the distinct ones).

The product of its digits is 103219200, while the sum is 63.

The spelling of 78564541126428 in words is "seventy-eight trillion, five hundred sixty-four billion, five hundred forty-one million, one hundred twenty-six thousand, four hundred twenty-eight".