78855528226692 has 192 divisors, whose sum is σ = 223002991411200. Its totient is φ = 21208070177280.

The previous prime is 78855528226639. The next prime is 78855528226697. The reversal of 78855528226692 is 29662282555887.

It is not an unprimeable number, because it can be changed into a prime (78855528226697) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55972909 + ... + 57364427.

It is an arithmetic number, because the mean of its divisors is an integer number (1161473913600).

Almost surely, 2^{78855528226692} 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 78855528226692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111501495705600).

78855528226692 is an abundant number, since it is smaller than the sum of its proper divisors (144147463184508).

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

78855528226692 is a wasteful number, since it uses less digits than its factorization.

78855528226692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392146 (or 1392144 counting only the distinct ones).

The product of its digits is 2322432000, while the sum is 75.

The spelling of 78855528226692 in words is "seventy-eight trillion, eight hundred fifty-five billion, five hundred twenty-eight million, two hundred twenty-six thousand, six hundred ninety-two".