1655576507797 has 2 divisors, whose sum is σ = 1655576507798. Its totient is φ = 1655576507796.

The previous prime is 1655576507791. The next prime is 1655576507839. The reversal of 1655576507797 is 7977056755561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 993947186961 + 661629320836 = 996969^2 + 813406^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655576507797 - 2¹¹ = 1655576505749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655576507791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827788253898 + 827788253899.

It is an arithmetic number, because the mean of its divisors is an integer number (827788253899).

Almost surely, 2^{1655576507797} is an apocalyptic number.

It is an amenable number.

1655576507797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655576507797 is an equidigital number, since it uses as much as digits as its factorization.

1655576507797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486202500, while the sum is 70.

The spelling of 1655576507797 in words is "one trillion, six hundred fifty-five billion, five hundred seventy-six million, five hundred seven thousand, seven hundred ninety-seven".