1655743440479 has 2 divisors, whose sum is σ = 1655743440480. Its totient is φ = 1655743440478.

The previous prime is 1655743440467. The next prime is 1655743440553. The reversal of 1655743440479 is 9740443475561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655743440479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655743440979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827871720239 + 827871720240.

It is an arithmetic number, because the mean of its divisors is an integer number (827871720240).

Almost surely, 2^{1655743440479} is an apocalyptic number.

1655743440479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655743440479 is an equidigital number, since it uses as much as digits as its factorization.

1655743440479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50803200, while the sum is 59.

The spelling of 1655743440479 in words is "one trillion, six hundred fifty-five billion, seven hundred forty-three million, four hundred forty thousand, four hundred seventy-nine".