6415780436449 has 4 divisors (see below), whose sum is σ = 6464755859760. Its totient is φ = 6366805013140.

The previous prime is 6415780436413. The next prime is 6415780436473. The reversal of 6415780436449 is 9446340875146.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6415780436449 - 2⁴¹ = 4216757180897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6415780434449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24487711459 + ... + 24487711720.

It is an arithmetic number, because the mean of its divisors is an integer number (1616188964940).

Almost surely, 2^{6415780436449} is an apocalyptic number.

It is an amenable number.

6415780436449 is a deficient number, since it is larger than the sum of its proper divisors (48975423311).

6415780436449 is a wasteful number, since it uses less digits than its factorization.

6415780436449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48975423310.

The product of its (nonzero) digits is 69672960, while the sum is 61.

The spelling of 6415780436449 in words is "six trillion, four hundred fifteen billion, seven hundred eighty million, four hundred thirty-six thousand, four hundred forty-nine".