6403791780069 has 8 divisors (see below), whose sum is σ = 8575034487552. Its totient is φ = 4250871796320.

The previous prime is 6403791780013. The next prime is 6403791780077. The reversal of 6403791780069 is 9600871973046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6403791780069 - 2⁹ = 6403791779557 is a prime.

It is a super-2 number, since 2×6403791780069² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6403791779994 and 6403791780021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6403799780069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4580680117 + ... + 4580681514.

It is an arithmetic number, because the mean of its divisors is an integer number (1071879310944).

Almost surely, 2^{6403791780069} is an apocalyptic number.

It is an amenable number.

6403791780069 is a deficient number, since it is larger than the sum of its proper divisors (2171242707483).

6403791780069 is a wasteful number, since it uses less digits than its factorization.

6403791780069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9161361867.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 6403791780069 in words is "six trillion, four hundred three billion, seven hundred ninety-one million, seven hundred eighty thousand, sixty-nine".