4265664421440 has 224 divisors, whose sum is σ = 14259681025920. Its totient is φ = 1077385936896.

The previous prime is 4265664421427. The next prime is 4265664421481. The reversal of 4265664421440 is 441244665624.

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 4265664421440.

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, 83823844 + ... + 83874716.

Almost surely, 2^{4265664421440} is an apocalyptic number.

4265664421440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4265664421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7129840512960).

4265664421440 is an abundant number, since it is smaller than the sum of its proper divisors (9994016604480).

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

4265664421440 is a wasteful number, since it uses less digits than its factorization.

4265664421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55509 (or 55499 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 48.

The spelling of 4265664421440 in words is "four trillion, two hundred sixty-five billion, six hundred sixty-four million, four hundred twenty-one thousand, four hundred forty".