1878335252640 has 576 divisors, whose sum is σ = 8258481826560. Its totient is φ = 390302668800.

The previous prime is 1878335252551. The next prime is 1878335252671. The reversal of 1878335252640 is 462525338781.

1878335252640 is a `hidden beast` number, since 1 + 8 + 7 + 83 + 35 + 2 + 526 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3402370 + ... + 3915710.

It is an arithmetic number, because the mean of its divisors is an integer number (14337642060).

Almost surely, 2^{1878335252640} is an apocalyptic number.

1878335252640 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 1878335252640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4129240913280).

1878335252640 is an abundant number, since it is smaller than the sum of its proper divisors (6380146573920).

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

1878335252640 is a wasteful number, since it uses less digits than its factorization.

1878335252640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513394 (or 513369 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 1878335252640 in words is "one trillion, eight hundred seventy-eight billion, three hundred thirty-five million, two hundred fifty-two thousand, six hundred forty".