863378172380 has 12 divisors (see below), whose sum is σ = 1813094162040. Its totient is φ = 345351268944.

The previous prime is 863378172373. The next prime is 863378172383. The reversal of 863378172380 is 83271873368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863378172383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21584454290 + ... + 21584454329.

It is an arithmetic number, because the mean of its divisors is an integer number (151091180170).

Almost surely, 2^863378172380 is an apocalyptic number.

It is an amenable number.

863378172380 is an abundant number, since it is smaller than the sum of its proper divisors (949715989660).

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

863378172380 is a wasteful number, since it uses less digits than its factorization.

863378172380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43168908628 (or 43168908626 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 863378172380 in words is "eight hundred sixty-three billion, three hundred seventy-eight million, one hundred seventy-two thousand, three hundred eighty".