1447427661240 has 512 divisors, whose sum is σ = 4942001341440. Its totient is φ = 336052224000.

The previous prime is 1447427661181. The next prime is 1447427661257. The reversal of 1447427661240 is 421667247441.

It is a self number, because there is not a number n which added to its sum of digits gives 1447427661240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 904076440 + ... + 904078040.

It is an arithmetic number, because the mean of its divisors is an integer number (9652346370).

Almost surely, 2^{1447427661240} is an apocalyptic number.

1447427661240 is a gapful number since it is divisible by the number (10) 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 1447427661240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2471000670720).

1447427661240 is an abundant number, since it is smaller than the sum of its proper divisors (3494573680200).

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

1447427661240 is a wasteful number, since it uses less digits than its factorization.

1447427661240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 1447427661240 in words is "one trillion, four hundred forty-seven billion, four hundred twenty-seven million, six hundred sixty-one thousand, two hundred forty".