1655616042011 has 2 divisors, whose sum is σ = 1655616042012. Its totient is φ = 1655616042010.

The previous prime is 1655616041983. The next prime is 1655616042019. The reversal of 1655616042011 is 1102406165561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1655616042011 - 2²⁶ = 1655548933147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1655616042019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827808021005 + 827808021006.

It is an arithmetic number, because the mean of its divisors is an integer number (827808021006).

Almost surely, 2^{1655616042011} is an apocalyptic number.

1655616042011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655616042011 is an equidigital number, since it uses as much as digits as its factorization.

1655616042011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 1655616042011 in words is "one trillion, six hundred fifty-five billion, six hundred sixteen million, forty-two thousand, eleven".