1641402557357 has 2 divisors, whose sum is σ = 1641402557358. Its totient is φ = 1641402557356.

The previous prime is 1641402557351. The next prime is 1641402557737. The reversal of 1641402557357 is 7537552041461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1300213392361 + 341189164996 = 1140269^2 + 584114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641402557357 - 2⁴ = 1641402557341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641402557351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820701278678 + 820701278679.

It is an arithmetic number, because the mean of its divisors is an integer number (820701278679).

Almost surely, 2^{1641402557357} is an apocalyptic number.

It is an amenable number.

1641402557357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641402557357 is an equidigital number, since it uses as much as digits as its factorization.

1641402557357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 1641402557357 in words is "one trillion, six hundred forty-one billion, four hundred two million, five hundred fifty-seven thousand, three hundred fifty-seven".