6400673336369 has 32 divisors (see below), whose sum is σ = 7310900540160. Its totient is φ = 5551329042432.

The previous prime is 6400673336339. The next prime is 6400673336417. The reversal of 6400673336369 is 9636333760046.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6400673336369 - 2¹⁶ = 6400673270833 is a prime.

It is a super-2 number, since 2×6400673336369² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6400673336329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421449794 + ... + 421464980.

It is an arithmetic number, because the mean of its divisors is an integer number (228465641880).

Almost surely, 2^{6400673336369} is an apocalyptic number.

It is an amenable number.

6400673336369 is a deficient number, since it is larger than the sum of its proper divisors (910227203791).

6400673336369 is a wasteful number, since it uses less digits than its factorization.

6400673336369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18329.

The product of its (nonzero) digits is 26453952, while the sum is 56.

The spelling of 6400673336369 in words is "six trillion, four hundred billion, six hundred seventy-three million, three hundred thirty-six thousand, three hundred sixty-nine".