2780005530503 has 2 divisors, whose sum is σ = 2780005530504. Its totient is φ = 2780005530502.

The previous prime is 2780005530457. The next prime is 2780005530509. The reversal of 2780005530503 is 3050355000872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2780005530503 - 2¹⁶ = 2780005464967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2780005530509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390002765251 + 1390002765252.

It is an arithmetic number, because the mean of its divisors is an integer number (1390002765252).

Almost surely, 2^{2780005530503} is an apocalyptic number.

2780005530503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780005530503 is an equidigital number, since it uses as much as digits as its factorization.

2780005530503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 2780005530503 in words is "two trillion, seven hundred eighty billion, five million, five hundred thirty thousand, five hundred three".