6403929489472 has 56 divisors (see below), whose sum is σ = 12718846800000. Its totient is φ = 3199181999616.

The previous prime is 6403929489401. The next prime is 6403929489533. The reversal of 6403929489472 is 2749849293046.

It is a super-2 number, since 2×6403929489472² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6403929489398 and 6403929489407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422053278 + ... + 422068450.

Almost surely, 2^{6403929489472} is an apocalyptic number.

It is an amenable number.

6403929489472 is a deficient number, since it is larger than the sum of its proper divisors (6314917310528).

6403929489472 is a wasteful number, since it uses less digits than its factorization.

6403929489472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20483 (or 20473 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 67.

The spelling of 6403929489472 in words is "six trillion, four hundred three billion, nine hundred twenty-nine million, four hundred eighty-nine thousand, four hundred seventy-two".