39805033995899 has 2 divisors, whose sum is σ = 39805033995900. Its totient is φ = 39805033995898.

The previous prime is 39805033995889. The next prime is 39805033995971. The reversal of 39805033995899 is 99859933050893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39805033995899 - 2¹² = 39805033991803 is a prime.

It is a super-2 number, since 2×39805033995899² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39805033995809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19902516997949 + 19902516997950.

It is an arithmetic number, because the mean of its divisors is an integer number (19902516997950).

Almost surely, 2^{39805033995899} is an apocalyptic number.

39805033995899 is a deficient number, since it is larger than the sum of its proper divisors (1).

39805033995899 is an equidigital number, since it uses as much as digits as its factorization.

39805033995899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2550916800, while the sum is 80.

The spelling of 39805033995899 in words is "thirty-nine trillion, eight hundred five billion, thirty-three million, nine hundred ninety-five thousand, eight hundred ninety-nine".