381700779678 has 32 divisors (see below), whose sum is σ = 855730375200. Its totient is φ = 126107630208.

The previous prime is 381700779667. The next prime is 381700779701. The reversal of 381700779678 is 876977007183.

It is a Curzon number.

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, 31270593 + ... + 31282796.

It is an arithmetic number, because the mean of its divisors is an integer number (26741574225).

Almost surely, 2^381700779678 is an apocalyptic number.

381700779678 is an abundant number, since it is smaller than the sum of its proper divisors (474029595522).

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

381700779678 is a wasteful number, since it uses less digits than its factorization.

381700779678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62553513 (or 62553507 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 63.

The spelling of 381700779678 in words is "three hundred eighty-one billion, seven hundred million, seven hundred seventy-nine thousand, six hundred seventy-eight".