6405120499 has 2 divisors, whose sum is σ = 6405120500. Its totient is φ = 6405120498.

The previous prime is 6405120493. The next prime is 6405120503. The reversal of 6405120499 is 9940215046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6405120499 - 2²⁹ = 5868249587 is a prime.

It is not a weakly prime, because it can be changed into another prime (6405120493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202560249 + 3202560250.

It is an arithmetic number, because the mean of its divisors is an integer number (3202560250).

Almost surely, 2^6405120499 is an apocalyptic number.

6405120499 is a deficient number, since it is larger than the sum of its proper divisors (1).

6405120499 is an equidigital number, since it uses as much as digits as its factorization.

6405120499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 6405120499 is about 80031.9967200619. The cubic root of 6405120499 is about 1857.1305525127.

The spelling of 6405120499 in words is "six billion, four hundred five million, one hundred twenty thousand, four hundred ninety-nine".