1640087237099 has 2 divisors, whose sum is σ = 1640087237100. Its totient is φ = 1640087237098.

The previous prime is 1640087237083. The next prime is 1640087237149. The reversal of 1640087237099 is 9907327800461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1640087237099 - 2⁴ = 1640087237083 is a prime.

It is a super-2 number, since 2×1640087237099² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1640087237039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820043618549 + 820043618550.

It is an arithmetic number, because the mean of its divisors is an integer number (820043618550).

Almost surely, 2^{1640087237099} is an apocalyptic number.

1640087237099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640087237099 is an equidigital number, since it uses as much as digits as its factorization.

1640087237099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 1640087237099 in words is "one trillion, six hundred forty billion, eighty-seven million, two hundred thirty-seven thousand, ninety-nine".