6429649268840 has 64 divisors (see below), whose sum is σ = 16652329142400. Its totient is φ = 2188591803648.

The previous prime is 6429649268789. The next prime is 6429649268857. The reversal of 6429649268840 is 488629469246.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82561919 + ... + 82639758.

It is an arithmetic number, because the mean of its divisors is an integer number (260192642850).

Almost surely, 2^{6429649268840} is an apocalyptic number.

It is an amenable number.

6429649268840 is an abundant number, since it is smaller than the sum of its proper divisors (10222679873560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6429649268840 is a wasteful number, since it uses less digits than its factorization.

6429649268840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165201834 (or 165201830 counting only the distinct ones).

The product of its (nonzero) digits is 286654464, while the sum is 68.

The spelling of 6429649268840 in words is "six trillion, four hundred twenty-nine billion, six hundred forty-nine million, two hundred sixty-eight thousand, eight hundred forty".