2780553252780 has 72 divisors (see below), whose sum is σ = 8434763033424. Its totient is φ = 741444105600.

The previous prime is 2780553252773. The next prime is 2780553252793. The reversal of 2780553252780 is 872523550872.

2780553252780 is a `hidden beast` number, since 2 + 7 + 8 + 0 + 5 + 5 + 32 + 527 + 80 = 666.

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 23 ways as a sum of consecutive naturals, for example, 3359010 + ... + 4104150.

Almost surely, 2^{2780553252780} is an apocalyptic number.

2780553252780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2780553252780 is an abundant number, since it is smaller than the sum of its proper divisors (5654209780644).

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

2780553252780 is a wasteful number, since it uses less digits than its factorization.

2780553252780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765887 (or 765882 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 2780553252780 in words is "two trillion, seven hundred eighty billion, five hundred fifty-three million, two hundred fifty-two thousand, seven hundred eighty".