7801440006768 has 20 divisors (see below), whose sum is σ = 20153720017608. Its totient is φ = 2600480002240.

The previous prime is 7801440006751. The next prime is 7801440006803. The reversal of 7801440006768 is 8676000441087.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7801440006768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81265000023 + ... + 81265000118.

Almost surely, 2^{7801440006768} is an apocalyptic number.

It is an amenable number.

7801440006768 is an abundant number, since it is smaller than the sum of its proper divisors (12352280010840).

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

7801440006768 is a wasteful number, since it uses less digits than its factorization.

7801440006768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162530000152 (or 162530000146 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 7801440006768 in words is "seven trillion, eight hundred one billion, four hundred forty million, six thousand, seven hundred sixty-eight".