6505002155123 has 2 divisors, whose sum is σ = 6505002155124. Its totient is φ = 6505002155122.

The previous prime is 6505002155083. The next prime is 6505002155137. The reversal of 6505002155123 is 3215512005056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6505002155123 - 2¹⁸ = 6505001892979 is a prime.

It is not a weakly prime, because it can be changed into another prime (6505002155143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252501077561 + 3252501077562.

It is an arithmetic number, because the mean of its divisors is an integer number (3252501077562).

Almost surely, 2^{6505002155123} is an apocalyptic number.

6505002155123 is a deficient number, since it is larger than the sum of its proper divisors (1).

6505002155123 is an equidigital number, since it uses as much as digits as its factorization.

6505002155123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 6505002155123 in words is "six trillion, five hundred five billion, two million, one hundred fifty-five thousand, one hundred twenty-three".