6346405463640 has 128 divisors (see below), whose sum is σ = 20861553265920. Its totient is φ = 1531744832000.

The previous prime is 6346405463603. The next prime is 6346405463653. The reversal of 6346405463640 is 463645046436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10290411 + ... + 10889690.

It is an arithmetic number, because the mean of its divisors is an integer number (162980884890).

Almost surely, 2^{6346405463640} is an apocalyptic number.

6346405463640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6346405463640 is an abundant number, since it is smaller than the sum of its proper divisors (14515147802280).

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

6346405463640 is a wasteful number, since it uses less digits than its factorization.

6346405463640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21180353 (or 21180349 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 51.

The spelling of 6346405463640 in words is "six trillion, three hundred forty-six billion, four hundred five million, four hundred sixty-three thousand, six hundred forty".