8239968026778 has 16 divisors (see below), whose sum is σ = 16480718569440. Its totient is φ = 2746525589616.

The previous prime is 8239968026777. The next prime is 8239968026861. The reversal of 8239968026778 is 8776208699328.

It is a super-2 number, since 2×8239968026778² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8239968026777) 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, 32467893 + ... + 32720696.

It is an arithmetic number, because the mean of its divisors is an integer number (1030044910590).

Almost surely, 2^{8239968026778} is an apocalyptic number.

8239968026778 is an abundant number, since it is smaller than the sum of its proper divisors (8240750542662).

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

8239968026778 is a wasteful number, since it uses less digits than its factorization.

8239968026778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65209661.

The product of its (nonzero) digits is 877879296, while the sum is 75.

The spelling of 8239968026778 in words is "eight trillion, two hundred thirty-nine billion, nine hundred sixty-eight million, twenty-six thousand, seven hundred seventy-eight".