78928486572 has 96 divisors (see below), whose sum is σ = 205989038080. Its totient is φ = 23357859840.

The previous prime is 78928486513. The next prime is 78928486597. The reversal of 78928486572 is 27568482987.

It is a super-2 number, since 2×78928486572² (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 (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738204 + ... + 838332.

Almost surely, 2^78928486572 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 78928486572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102994519040).

78928486572 is an abundant number, since it is smaller than the sum of its proper divisors (127060551508).

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

78928486572 is a wasteful number, since it uses less digits than its factorization.

78928486572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100343 (or 100341 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 66.

The spelling of 78928486572 in words is "seventy-eight billion, nine hundred twenty-eight million, four hundred eighty-six thousand, five hundred seventy-two".