1878065477240 has 64 divisors (see below), whose sum is σ = 4288009259520. Its totient is φ = 740153680000.

The previous prime is 1878065477231. The next prime is 1878065477257. The reversal of 1878065477240 is 427745608781.

It is a self number, because there is not a number n which added to its sum of digits gives 1878065477240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4072415 + ... + 4510065.

It is an arithmetic number, because the mean of its divisors is an integer number (67000144680).

Almost surely, 2^{1878065477240} is an apocalyptic number.

1878065477240 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 1878065477240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2144004629760).

1878065477240 is an abundant number, since it is smaller than the sum of its proper divisors (2409943782280).

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

1878065477240 is a wasteful number, since it uses less digits than its factorization.

1878065477240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439244 (or 439240 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 59.

The spelling of 1878065477240 in words is "one trillion, eight hundred seventy-eight billion, sixty-five million, four hundred seventy-seven thousand, two hundred forty".