2782018091533 has 2 divisors, whose sum is σ = 2782018091534. Its totient is φ = 2782018091532.

The previous prime is 2782018091473. The next prime is 2782018091543. The reversal of 2782018091533 is 3351908102872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1752560288649 + 1029457802884 = 1323843^2 + 1014622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2782018091533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2782018091543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391009045766 + 1391009045767.

It is an arithmetic number, because the mean of its divisors is an integer number (1391009045767).

Almost surely, 2^{2782018091533} is an apocalyptic number.

It is an amenable number.

2782018091533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2782018091533 is an equidigital number, since it uses as much as digits as its factorization.

2782018091533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 2782018091533 in words is "two trillion, seven hundred eighty-two billion, eighteen million, ninety-one thousand, five hundred thirty-three".