2780009752548 has 96 divisors (see below), whose sum is σ = 7857679705344. Its totient is φ = 746780848128.

The previous prime is 2780009752501. The next prime is 2780009752571. The reversal of 2780009752548 is 8452579000872.

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 31 ways as a sum of consecutive naturals, for example, 339486 + ... + 2382282.

It is an arithmetic number, because the mean of its divisors is an integer number (81850830264).

Almost surely, 2^{2780009752548} is an apocalyptic number.

2780009752548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2780009752548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3928839852672).

2780009752548 is an abundant number, since it is smaller than the sum of its proper divisors (5077669952796).

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

2780009752548 is a wasteful number, since it uses less digits than its factorization.

2780009752548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043781 (or 2043779 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 2780009752548 in words is "two trillion, seven hundred eighty billion, nine million, seven hundred fifty-two thousand, five hundred forty-eight".