78306256896 has 96 divisors (see below), whose sum is σ = 238589507520. Its totient is φ = 22373203968.

The previous prime is 78306256891. The next prime is 78306256907. The reversal of 78306256896 is 69865260387.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×78306256896² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (78306256891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867361 + ... + 953376.

It is an arithmetic number, because the mean of its divisors is an integer number (2485307370).

Almost surely, 2^78306256896 is an apocalyptic number.

It is an amenable number.

78306256896 is an abundant number, since it is smaller than the sum of its proper divisors (160283250624).

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

78306256896 is a wasteful number, since it uses less digits than its factorization.

78306256896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820769 (or 1820749 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 78306256896 in words is "seventy-eight billion, three hundred six million, two hundred fifty-six thousand, eight hundred ninety-six".