1655085508831 has 2 divisors, whose sum is σ = 1655085508832. Its totient is φ = 1655085508830.

The previous prime is 1655085508789. The next prime is 1655085508849. The reversal of 1655085508831 is 1388055805561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655085508831 is a prime.

It is a super-2 number, since 2×1655085508831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655085538831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827542754415 + 827542754416.

It is an arithmetic number, because the mean of its divisors is an integer number (827542754416).

Almost surely, 2^{1655085508831} is an apocalyptic number.

1655085508831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655085508831 is an equidigital number, since it uses as much as digits as its factorization.

1655085508831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760000, while the sum is 55.

The spelling of 1655085508831 in words is "one trillion, six hundred fifty-five billion, eighty-five million, five hundred eight thousand, eight hundred thirty-one".