1782754541551 has 2 divisors, whose sum is σ = 1782754541552. Its totient is φ = 1782754541550.

The previous prime is 1782754541431. The next prime is 1782754541597. The reversal of 1782754541551 is 1551454572871.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1782754541551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1782754541492 and 1782754541501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1782754581551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891377270775 + 891377270776.

It is an arithmetic number, because the mean of its divisors is an integer number (891377270776).

Almost surely, 2^{1782754541551} is an apocalyptic number.

1782754541551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1782754541551 is an equidigital number, since it uses as much as digits as its factorization.

1782754541551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840000, while the sum is 55.

The spelling of 1782754541551 in words is "one trillion, seven hundred eighty-two billion, seven hundred fifty-four million, five hundred forty-one thousand, five hundred fifty-one".