7801422638543 has 16 divisors (see below), whose sum is σ = 7905392640000. Its totient is φ = 7698040861152.

The previous prime is 7801422638533. The next prime is 7801422638573. The reversal of 7801422638543 is 3458362241087.

It is a cyclic number.

It is not a de Polignac number, because 7801422638543 - 2¹⁸ = 7801422376399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7801422638533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138101378 + ... + 138157856.

It is an arithmetic number, because the mean of its divisors is an integer number (494087040000).

Almost surely, 2^{7801422638543} is an apocalyptic number.

7801422638543 is a deficient number, since it is larger than the sum of its proper divisors (103970001457).

7801422638543 is a wasteful number, since it uses less digits than its factorization.

7801422638543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61654.

The product of its (nonzero) digits is 7741440, while the sum is 53.

The spelling of 7801422638543 in words is "seven trillion, eight hundred one billion, four hundred twenty-two million, six hundred thirty-eight thousand, five hundred forty-three".