1640907570079 has 2 divisors, whose sum is σ = 1640907570080. Its totient is φ = 1640907570078.

The previous prime is 1640907569989. The next prime is 1640907570089. The reversal of 1640907570079 is 9700757090461.

It is a strong prime.

It is an emirp because it is prime and its reverse (9700757090461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1640907570079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640907570089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820453785039 + 820453785040.

It is an arithmetic number, because the mean of its divisors is an integer number (820453785040).

Almost surely, 2^{1640907570079} is an apocalyptic number.

1640907570079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640907570079 is an equidigital number, since it uses as much as digits as its factorization.

1640907570079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3333960, while the sum is 55.

The spelling of 1640907570079 in words is "one trillion, six hundred forty billion, nine hundred seven million, five hundred seventy thousand, seventy-nine".