2779248426240 has 1728 divisors, whose sum is σ = 11410441297920. Its totient is φ = 569327616000.

The previous prime is 2779248426239. The next prime is 2779248426263. The reversal of 2779248426240 is 426248429772.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4204611510 + ... + 4204612170.

It is an arithmetic number, because the mean of its divisors is an integer number (6603264640).

Almost surely, 2^{2779248426240} is an apocalyptic number.

2779248426240 is a gapful number since it is divisible by the number (20) 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 2779248426240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5705220648960).

2779248426240 is an abundant number, since it is smaller than the sum of its proper divisors (8631192871680).

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

2779248426240 is a wasteful number, since it uses less digits than its factorization.

2779248426240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 57.

The spelling of 2779248426240 in words is "two trillion, seven hundred seventy-nine billion, two hundred forty-eight million, four hundred twenty-six thousand, two hundred forty".