2780280527755 has 16 divisors (see below), whose sum is σ = 3351471992064. Its totient is φ = 2214135221760.

The previous prime is 2780280527753. The next prime is 2780280527807. The reversal of 2780280527755 is 5577250820872.

It is a happy number.

It is not a de Polignac number, because 2780280527755 - 2¹ = 2780280527753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2780280527755.

It is not an unprimeable number, because it can be changed into a prime (2780280527753) 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, 26146095 + ... + 26252215.

It is an arithmetic number, because the mean of its divisors is an integer number (209466999504).

Almost surely, 2^{2780280527755} is an apocalyptic number.

2780280527755 is a deficient number, since it is larger than the sum of its proper divisors (571191464309).

2780280527755 is a wasteful number, since it uses less digits than its factorization.

2780280527755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129846.

The product of its (nonzero) digits is 21952000, while the sum is 58.

The spelling of 2780280527755 in words is "two trillion, seven hundred eighty billion, two hundred eighty million, five hundred twenty-seven thousand, seven hundred fifty-five".