6550465405440 has 160 divisors (see below), whose sum is σ = 22844748396096. Its totient is φ = 1587991592960.

The previous prime is 6550465405417. The next prime is 6550465405453. The reversal of 6550465405440 is 445045640556.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6550465405440.

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, 38684847 + ... + 38853806.

Almost surely, 2^{6550465405440} is an apocalyptic number.

6550465405440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6550465405440 is an abundant number, since it is smaller than the sum of its proper divisors (16294282990656).

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

6550465405440 is a wasteful number, since it uses less digits than its factorization.

6550465405440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77538690 (or 77538674 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 48.

The spelling of 6550465405440 in words is "six trillion, five hundred fifty billion, four hundred sixty-five million, four hundred five thousand, four hundred forty".