7781223484748 has 24 divisors (see below), whose sum is σ = 15893562865152. Its totient is φ = 3263856658704.

The previous prime is 7781223484739. The next prime is 7781223484759. The reversal of 7781223484748 is 8474843221877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2956390586 + ... + 2956393217.

It is an arithmetic number, because the mean of its divisors is an integer number (662231786048).

Almost surely, 2^{7781223484748} is an apocalyptic number.

It is an amenable number.

7781223484748 is an abundant number, since it is smaller than the sum of its proper divisors (8112339380404).

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

7781223484748 is a wasteful number, since it uses less digits than its factorization.

7781223484748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912783861 (or 5912783859 counting only the distinct ones).

The product of its digits is 134873088, while the sum is 65.

The spelling of 7781223484748 in words is "seven trillion, seven hundred eighty-one billion, two hundred twenty-three million, four hundred eighty-four thousand, seven hundred forty-eight".