1641375465377 has 2 divisors, whose sum is σ = 1641375465378. Its totient is φ = 1641375465376.

The previous prime is 1641375465361. The next prime is 1641375465413. The reversal of 1641375465377 is 7735645731461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216787692561 + 424587772816 = 1103081^2 + 651604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641375465377 - 2⁴ = 1641375465361 is a prime.

It is a super-2 number, since 2×1641375465377² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1641375165377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820687732688 + 820687732689.

It is an arithmetic number, because the mean of its divisors is an integer number (820687732689).

Almost surely, 2^{1641375465377} is an apocalyptic number.

It is an amenable number.

1641375465377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641375465377 is an equidigital number, since it uses as much as digits as its factorization.

1641375465377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44452800, while the sum is 59.

The spelling of 1641375465377 in words is "one trillion, six hundred forty-one billion, three hundred seventy-five million, four hundred sixty-five thousand, three hundred seventy-seven".