1855005200039 has 2 divisors, whose sum is σ = 1855005200040. Its totient is φ = 1855005200038.

The previous prime is 1855005200017. The next prime is 1855005200107. The reversal of 1855005200039 is 9300025005581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1855005200039 - 2¹² = 1855005195943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1855005199975 and 1855005200011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855005200639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927502600019 + 927502600020.

It is an arithmetic number, because the mean of its divisors is an integer number (927502600020).

Almost surely, 2^{1855005200039} is an apocalyptic number.

1855005200039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855005200039 is an equidigital number, since it uses as much as digits as its factorization.

1855005200039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 1855005200039 in words is "one trillion, eight hundred fifty-five billion, five million, two hundred thousand, thirty-nine".