1640517800351 has 2 divisors, whose sum is σ = 1640517800352. Its totient is φ = 1640517800350.

The previous prime is 1640517800213. The next prime is 1640517800393. The reversal of 1640517800351 is 1530087150461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1640517800351 - 2¹⁴ = 1640517783967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1640517800299 and 1640517800308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640517800951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820258900175 + 820258900176.

It is an arithmetic number, because the mean of its divisors is an integer number (820258900176).

Almost surely, 2^{1640517800351} is an apocalyptic number.

1640517800351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640517800351 is an equidigital number, since it uses as much as digits as its factorization.

1640517800351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 1640517800351 in words is "one trillion, six hundred forty billion, five hundred seventeen million, eight hundred thousand, three hundred fifty-one".