378887712840 has 384 divisors, whose sum is σ = 1604703260160. Its totient is φ = 75238612992.

The previous prime is 378887712787. The next prime is 378887712901. The reversal of 378887712840 is 48217788873.

It is a super-2 number, since 2×378887712840² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 216757 + ... + 897083.

It is an arithmetic number, because the mean of its divisors is an integer number (4178914740).

Almost surely, 2^378887712840 is an apocalyptic number.

378887712840 is a gapful number since it is divisible by the number (30) 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 378887712840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802351630080).

378887712840 is an abundant number, since it is smaller than the sum of its proper divisors (1225815547320).

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

378887712840 is a wasteful number, since it uses less digits than its factorization.

378887712840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680381 (or 680374 counting only the distinct ones).

The product of its (nonzero) digits is 33718272, while the sum is 63.

The spelling of 378887712840 in words is "three hundred seventy-eight billion, eight hundred eighty-seven million, seven hundred twelve thousand, eight hundred forty".