1081655650477 has 2 divisors, whose sum is σ = 1081655650478. Its totient is φ = 1081655650476.

The previous prime is 1081655650451. The next prime is 1081655650513. The reversal of 1081655650477 is 7740565561801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 907711602121 + 173944048356 = 952739^2 + 417066^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081655650477 - 2¹⁵ = 1081655617709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081655650577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540827825238 + 540827825239.

It is an arithmetic number, because the mean of its divisors is an integer number (540827825239).

Almost surely, 2^{1081655650477} is an apocalyptic number.

It is an amenable number.

1081655650477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081655650477 is an equidigital number, since it uses as much as digits as its factorization.

1081655650477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056000, while the sum is 55.

The spelling of 1081655650477 in words is "one trillion, eighty-one billion, six hundred fifty-five million, six hundred fifty thousand, four hundred seventy-seven".