1655787161627 has 2 divisors, whose sum is σ = 1655787161628. Its totient is φ = 1655787161626.

The previous prime is 1655787161557. The next prime is 1655787161629. The reversal of 1655787161627 is 7261617875561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1655787161627 - 2²² = 1655782967323 is a prime.

It is a super-2 number, since 2×1655787161627² (a number of 25 digits) contains 22 as substring.

Together with 1655787161629, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1655787161627.

It is not a weakly prime, because it can be changed into another prime (1655787161629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827893580813 + 827893580814.

It is an arithmetic number, because the mean of its divisors is an integer number (827893580814).

Almost surely, 2^{1655787161627} is an apocalyptic number.

1655787161627 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655787161627 is an equidigital number, since it uses as much as digits as its factorization.

1655787161627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29635200, while the sum is 62.

The spelling of 1655787161627 in words is "one trillion, six hundred fifty-five billion, seven hundred eighty-seven million, one hundred sixty-one thousand, six hundred twenty-seven".