1652417672561 has 2 divisors, whose sum is σ = 1652417672562. Its totient is φ = 1652417672560.

The previous prime is 1652417672551. The next prime is 1652417672569. The reversal of 1652417672561 is 1652767142561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1408776712561 + 243640960000 = 1186919^2 + 493600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652417672561 - 2¹⁰ = 1652417671537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1652417672569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826208836280 + 826208836281.

It is an arithmetic number, because the mean of its divisors is an integer number (826208836281).

Almost surely, 2^{1652417672561} is an apocalyptic number.

It is an amenable number.

1652417672561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652417672561 is an equidigital number, since it uses as much as digits as its factorization.

1652417672561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 53.

The spelling of 1652417672561 in words is "one trillion, six hundred fifty-two billion, four hundred seventeen million, six hundred seventy-two thousand, five hundred sixty-one".